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Enter the serial number from the pocket watch movement below. Do not use the case number. Tips for looking up your watch

How to Find Info About Your Pocket Watch

The Pocket Watch Database has compiled data covering the major American pocket watch manufacturers and created an easy way to find information using the serial number on the watch movement. Here are a few tips to find information about your pocket watch:

  1. Always input the serial number from the pocket watch movement (the "guts" of the watch).
  2. Never use the serial number from the case or any other part.
  3. If the serial number includes a letter, enter it along with the number when using the lookup feature.
  4. Many pocket watch case backs screw off. Others may require a dull wide blade to pry or pop the cover. Be careful not to scratch or damage the movement.
  5. Always select the correct manufacturer, which is usually stamped on the watch movement.
  6. If the manufacturer is not listed on the site, you may have a "private label" watch or it may not be American-made.
  7. Understand that many companies did not keep accurate or complete records. As a result, information displayed on this site may have inaccuracies. This is to be expected, and we have included an option to report inaccurate information on the result pages so the database can be continually improved.
Pocket Watch Serial Number Lookup - Hamilton, South Bend, Illinois, Rockford, Waltham & Elgin Pocket Watches
  Serial Number:
Need to replace a watch crystal? Use our new crystal size guide to find the proper fit.

Hamilton Pocket Watch Patents

The following gallery contains patents that were issued or assigned to Hamilton or individuals known to be working for the company at the time. Not all designs were fully implemented into production.

Watch Barrel

Patent Number:832672
Description:Watch Barrel
Inventor:Samuel R. Hoffmeier
Assignee:Hamilton Watch Co
Patent Date:Oct 9, 1906
Patent Type:Improvement

Watch Center Wheel

Patent Number:1037740
Description:Watch Center Wheel
Inventor:William W. Dudley
Assignee:Hamilton Watch Co
Patent Date:Sep 3, 1912
Patent Type:Improvement

Balance Cock

Patent Number:1037741
Description:Balance Cock
Inventor:William W. Dudley
Assignee:Hamilton Watch Co
Patent Date:Sep 3, 1912
Patent Type:Improvement

Hair Spring Stud Hold Means

Patent Number:1037742
Description:Hair Spring Stud Hold Means
Inventor:William W. Dudley
Assignee:Hamilton Watch Co
Patent Date:Sep 3, 1912
Patent Type:Improvement

Watch Case

Patent Number:D78487
Description:Watch Case
Inventor:Max Eugene Schwab
Alphonse Muischpard
Assignee:Hamilton Watch Co
Patent Date:May 7, 1929
Patent Type:Design

Escape Wheel

Patent Number:1928554
Description:Escape Wheel
Inventor:Howard L. Beehler
Assignee:Hamilton Watch Co
Patent Date:Sep 26, 1933
Patent Type:Improvement

Watch Case

Patent Number:1937079
Description:Watch Case
Inventor:Alphonse Wuischpard
Assignee:Hamilton Watch Co
Patent Date:Nov 28, 1933
Patent Type:Improvement

Method Apparatus For Measure Time Interval

Patent Number:2024799
Description:Method Apparatus For Measure Time Interval
Inventor:George P. Luckey
Assignee:Hamilton Watch Co
Patent Date:Dec 17, 1935
Patent Type:Improvement

Tp Method And Mean For Elimate Error

Patent Number:2037729
Description:Tp Method And Mean For Elimate Error
Inventor:George P. Luckey
Assignee:Hamilton Watch Co
Patent Date:Apr 21, 1936
Patent Type:Improvement

Watch Dial Etc

Patent Number:2103263
Description:Watch Dial Etc
Inventor:Alvin Lodge
Assignee:Hamilton Watch Co
Patent Date:Dec 28, 1937
Patent Type:Improvement

Watch Dial Method Making

Patent Number:2196998
Description:Watch Dial Method Making
Inventor:Alvin Lodge
Assignee:Hamilton Watch Co
Patent Date:Apr 16, 1940
Patent Type:Improvement

Machine Method Form Projection Metal Stock

Patent Number:2250542
Description:Machine Method Form Projection Metal Stock
Inventor:Alvin Lodge
Assignee:Hamilton Watch Co
Patent Date:Jul 29, 1941
Patent Type:Improvement

Tp Protective Device

Patent Number:2346476
Description:Tp Protective Device
Inventor:Ernest William Drescher
Assignee:Hamilton Watch Co
Patent Date:Nov 14, 1941
Patent Type:Improvement

Balance Staff

Patent Number:2293456
Description:Balance Staff
Inventor:Henry Cloyd Dobbs
Assignee:Hamilton Watch Co
Patent Date:Aug 18, 1942
Patent Type:Improvement

Clock Second Dial

Patent Number:2293459
Description:Clock Second Dial
Inventor:William Maurice Ewing
Allyn Collins Vine
Assignee:Hamilton Watch Co
Patent Date:Aug 18, 1942
Patent Type:Improvement

Constant Speed Body

Patent Number:2322861
Description:Constant Speed Body
Inventor:George Paul Luckey
Assignee:Hamilton Watch Co
Patent Date:Jun 29, 1943
Patent Type:Improvement

Automatic Feed Device

Patent Number:2327849
Description:Automatic Feed Device
Inventor:Bruce E. Wolfe
Assignee:Hamilton Watch Co
Patent Date:Aug 24, 1943
Patent Type:Improvement

Heat Treating Device

Patent Number:2339136
Description:Heat Treating Device
Inventor:William Ogle Jr Bennett
Assignee:Hamilton Watch Co
Patent Date:Jan 11, 1944
Patent Type:Improvement

Chronometer Watch Case

Patent Number:2352889
Description:Chronometer Watch Case
Inventor:Ernest W. Drescher
Assignee:Hamilton Watch Co
Patent Date:Jul 4, 1944
Patent Type:Improvement

Spring Process Device

Patent Number:2356912
Description:Spring Process Device
Inventor:William Ogle Jr Bennett
Ernest W. Drescher
Assignee:Hamilton Watch Co
Patent Date:Aug 9, 1944
Patent Type:Improvement

Process Crystalline Structure

Patent Number:2355877
Description:Process Crystalline Structure
Inventor:Van James Oliver Le
Assignee:Hamilton Watch Co
Patent Date:Aug 15, 1944
Patent Type:Improvement

Balance Wheel

Patent Number:2356911
Description:Balance Wheel
Inventor:William Ogle Jr Bennett
Assignee:Hamilton Watch Co
Patent Date:Aug 29, 1944
Patent Type:Improvement

Tp Set Device

Patent Number:2360113
Description:Tp Set Device
Inventor:Ernest William Drescher
Assignee:Hamilton Watch Co
Patent Date:Oct 10, 1944
Patent Type:Improvement

Chronometer Date Control

Patent Number:2360305
Description:Chronometer Date Control
Inventor:Francis Edward Meyer
Assignee:Hamilton Watch Co
Patent Date:Oct 10, 1944
Patent Type:Improvement

Spring Formation

Patent Number:2363113
Description:Spring Formation
Inventor:William Ogle Jr Bennett
Assignee:Hamilton Watch Co
Patent Date:Nov 21, 1944
Patent Type:Improvement

Grind Machine

Patent Number:2363128
Description:Grind Machine
Inventor:Robert Daniel Heffelfinger
Assignee:Hamilton Watch Co
Patent Date:Nov 21, 1944
Patent Type:Improvement

Drill Machine

Patent Number:2363136
Description:Drill Machine
Inventor:Ralph Bender Mentzer
Assignee:Hamilton Watch Co
Patent Date:Nov 21, 1944
Patent Type:Improvement

Band Lap

Patent Number:2369068
Description:Band Lap
Inventor:Ralph Bender Mentzer
Assignee:Hamilton Watch Co
Patent Date:Feb 6, 1945
Patent Type:Improvement

J Oliving Machine

Patent Number:2369094
Description:J Oliving Machine
Inventor:Harry Dewey Weaver
Assignee:Hamilton Watch Co
Patent Date:Feb 6, 1945
Patent Type:Improvement

Time Device

Patent Number:2372757
Description:Time Device
Inventor:William Ogle Jr Bennett
Assignee:Hamilton Watch Co
Patent Date:Apr 3, 1945
Patent Type:Improvement

Watch Movement Hack Second

Patent Number:2372771
Description:Watch Movement Hack Second
Inventor:Ernest William Drescher
Assignee:Hamilton Watch Co
Patent Date:Apr 3, 1945
Patent Type:Improvement

Hair Spring Mount

Patent Number:2379780
Description:Hair Spring Mount
Inventor:William Ogle Jr Bennett
Ernest W. Drescher
Assignee:Hamilton Watch Co
Patent Date:Jul 3, 1945
Patent Type:Improvement

Watch Stop Test Apparatus

Patent Number:2380360
Description:Watch Stop Test Apparatus
Inventor:William Ogle Jr Bennett
Assignee:Hamilton Watch Co
Patent Date:Jul 10, 1945
Patent Type:Improvement

Surfacing Machine

Patent Number:2381833
Description:Surfacing Machine
Inventor:Ralph B. Mentzer
Assignee:Hamilton Watch Co
Patent Date:Aug 7, 1945
Patent Type:Improvement

Surfacing Machine

Patent Number:2382940
Description:Surfacing Machine
Inventor:Ralph B. Mentzer
Assignee:Hamilton Watch Co
Patent Date:Aug 14, 1945
Patent Type:Improvement

Surface Marking Device

Patent Number:2385014
Description:Surface Marking Device
Inventor:Ralph B. Mentzer
Assignee:Hamilton Watch Co
Patent Date:Sep 18, 1945
Patent Type:Improvement

Shaping Machine

Patent Number:2385015
Description:Shaping Machine
Inventor:Ralph B. Mentzer
Assignee:Hamilton Watch Co
Patent Date:Sep 18, 1945
Patent Type:Improvement

Balance Screw

Patent Number:2385252
Description:Balance Screw
Inventor:William Ogle Jr Bennett
Assignee:Hamilton Watch Co
Patent Date:Sep 18, 1945
Patent Type:Improvement

J Hole Opening Apparatus

Patent Number:2385287
Description:J Hole Opening Apparatus
Inventor:Van John O. Le
Assignee:Hamilton Watch Co
Patent Date:Sep 18, 1945
Patent Type:Improvement

Machinery Welding

Patent Number:2387112
Description:Machinery Welding
Inventor:William Ogle Jr Bennett
Assignee:Hamilton Watch Co
Patent Date:Oct 16, 1945
Patent Type:Improvement

Multiple J Oliving Machine

Patent Number:2389537
Description:Multiple J Oliving Machine
Inventor:George William Jr Grisdale
Paul Numa Paroz
Assignee:Hamilton Watch Co
Patent Date:Nov 20, 1945
Patent Type:Improvement

Hair Spring Collet

Patent Number:2391816
Description:Hair Spring Collet
Inventor:William Ogle Jr Bennett
Assignee:Hamilton Watch Co
Patent Date:Dec 25, 1945
Patent Type:Improvement

Escape & Balance Staff

Patent Number:2392745
Description:Escape & Balance Staff
Inventor:Albert J. Kleiner
Assignee:Hamilton Watch Co
Patent Date:Jan 8, 1946
Patent Type:Improvement

Watch Case Watertight

Patent Number:2392787
Description:Watch Case Watertight
Inventor:Henri E. Vermot
Assignee:Hamilton Watch Co
Patent Date:Jan 8, 1946
Patent Type:Improvement

Watch Observation Box For Timing

Patent Number:2395328
Description:Watch Observation Box For Timing
Inventor:Robert Daniel Heffelfinger
Assignee:Hamilton Watch Co
Patent Date:Feb 19, 1946
Patent Type:Improvement

Frequency Multiplying Apparatus

Patent Number:2402012
Description:Frequency Multiplying Apparatus
Inventor:William Ogle Jr Bennett
Assignee:Hamilton Watch Co
Patent Date:Jun 11, 1946
Patent Type:Improvement

Watch Case Apparatus For Test Waterproof

Patent Number:2407945
Description:Watch Case Apparatus For Test Waterproof
Inventor:William Ogle Jr Bennett
Assignee:Hamilton Watch Co
Patent Date:Sep 17, 1946
Patent Type:Improvement

Tp Set Mech

Patent Number:2412493
Description:Tp Set Mech
Inventor:Elis F. Carlstrom
Assignee:Hamilton Watch Co
Patent Date:Dec 10, 1946
Patent Type:Improvement

Method Of Oliving Jewel

Patent Number:2419687
Description:Method Of Oliving Jewel
Inventor:George Paul Luckey
Assignee:Hamilton Watch Co
Patent Date:Mar 1, 1947
Patent Type:Improvement

Method For Surfacing Small Part

Patent Number:2424835
Description:Method For Surfacing Small Part
Inventor:George Paul Luckey
Theodore Raymond Schwalm
Assignee:Hamilton Watch Co
Patent Date:Jul 29, 1947
Patent Type:Improvement

Watch Cantilever Support For Gimbal Carry

Patent Number:2425602
Description:Watch Cantilever Support For Gimbal Carry
Inventor:Ernest William Drescher
Assignee:Hamilton Watch Co
Patent Date:Aug 12, 1947
Patent Type:Improvement

Perforated Plate Apparatus For Count Jewel

Patent Number:2432319
Description:Perforated Plate Apparatus For Count Jewel
Inventor:Van James O. Le
Assignee:Hamilton Watch Co
Patent Date:Dec 9, 1947
Patent Type:Improvement

Chronometer Box Secure Support

Patent Number:2433509
Description:Chronometer Box Secure Support
Inventor:Ernest W. Drescher
Assignee:Hamilton Watch Co
Patent Date:Dec 30, 1947
Patent Type:Improvement

Time Apparatus

Patent Number:2437929
Description:Time Apparatus
Inventor:William Ogle Jr Bennett
Assignee:Hamilton Watch Co
Patent Date:Mar 16, 1948
Patent Type:Improvement

Time Apparatus

Patent Number:2473929
Description:Time Apparatus
Inventor:William Ogle Jr Bennett
Assignee:Hamilton Watch Co
Patent Date:Mar 16, 1948
Patent Type:Improvement

Gear Test Apparatus

Patent Number:2444016
Description:Gear Test Apparatus
Inventor:William Ogle Jr Bennett
Assignee:Hamilton Watch Co
Patent Date:Jun 22, 1948
Patent Type:Improvement

Cylindrical Hair Spring Form

Patent Number:2457631
Description:Cylindrical Hair Spring Form
Inventor:William Ogle Jr Bennett
Assignee:Hamilton Watch Co
Patent Date:Dec 28, 1948
Patent Type:Improvement

Method Of Pallet Stone Cutting And Polishing

Patent Number:2458913
Description:Method Of Pallet Stone Cutting And Polishing
Inventor:Ralph B. Mentzer
Assignee:Hamilton Watch Co
Patent Date:Jan 11, 1949
Patent Type:Improvement

Floating Pawl

Patent Number:2460620
Description:Floating Pawl
Inventor:Elis Fedor Carlstrom
Assignee:Hamilton Watch Co
Patent Date:Feb 1, 1949
Patent Type:Improvement

Watch Case

Patent Number:2467062
Description:Watch Case
Inventor:Henri E. Vermot
Assignee:Hamilton Watch Co
Patent Date:Apr 12, 1949
Patent Type:Improvement

Display Sign

Patent Number:D153784
Description:Display Sign
Inventor:Gilbert C. Gettelman
Assignee:Hamilton Watch Co
Patent Date:May 17, 1949
Patent Type:Design

Cap Secure Means

Patent Number:2407226
Description:Cap Secure Means
Inventor:Harry D. Weaver
Assignee:Hamilton Watch Co
Patent Date:May 17, 1949
Patent Type:Improvement

Cap Secure Means

Patent Number:2470226
Description:Cap Secure Means
Inventor:Harry D. Weaver
Assignee:Hamilton Watch Co
Patent Date:May 17, 1949
Patent Type:Improvement

Watch Balance Test Apparatus And Therefor

Patent Number:2475947
Description:Watch Balance Test Apparatus And Therefor
Inventor:W. Kohlhagen
Assignee:Hamilton Watch Co
Patent Date:Jul 5, 1949
Patent Type:Improvement

Watch Seconds Set Mech

Patent Number:2496690
Description:Watch Seconds Set Mech
Inventor:William Ogle Jr Bennett
Assignee:Hamilton Watch Co
Patent Date:Feb 7, 1950
Patent Type:Improvement

Clock Display

Patent Number:D157584
Description:Clock Display
Inventor:Gilbert C. Gettelman
Assignee:Hamilton Watch Co
Patent Date:Mar 7, 1950
Patent Type:Design

Hair Spring Overcoil Raising Tool

Patent Number:2515689
Description:Hair Spring Overcoil Raising Tool
Inventor:William Ogle Jr Bennett
Assignee:Hamilton Watch Co
Patent Date:Jul 18, 1950
Patent Type:Improvement

Watch Oil

Patent Number:2534611
Description:Watch Oil
Inventor:Joseph S. Jr Martin
Assignee:Hamilton Watch Co
Patent Date:Dec 19, 1950
Patent Type:Improvement

Cannon Pinion Indenting Fixture

Patent Number:2535483
Description:Cannon Pinion Indenting Fixture
Inventor:Gilbert C. Iii Childs
Assignee:Hamilton Watch Co
Patent Date:Dec 26, 1950
Patent Type:Improvement

Multiple Check Comparator Gauge

Patent Number:2538311
Description:Multiple Check Comparator Gauge
Inventor:Douglass Jr Hawks
Haaften Egbert Van
Assignee:Hamilton Watch Co
Patent Date:Jan 16, 1951
Patent Type:Improvement

Surface Ornament Machine

Patent Number:2557005
Description:Surface Ornament Machine
Inventor:R. B. Mentzer
Assignee:Hamilton Watch Co
Patent Date:Jun 12, 1951
Patent Type:Improvement

Surface Ornament Machine

Patent Number:2557055
Description:Surface Ornament Machine
Inventor:Ralph Bender Mentzer
Assignee:Hamilton Watch Co
Patent Date:Jun 12, 1951
Patent Type:Improvement

Endstone Cap Assembly

Patent Number:2555412
Description:Endstone Cap Assembly
Inventor:Ernest W. Drescher
Assignee:Hamilton Watch Co
Patent Date:Jul 24, 1951
Patent Type:Improvement

Endstone Cap Assembly

Patent Number:2561690
Description:Endstone Cap Assembly
Inventor:Ernest W. Drescher
Assignee:Hamilton Watch Co
Patent Date:Jul 24, 1951
Patent Type:Improvement

Frequency Standard

Patent Number:2564636
Description:Frequency Standard
Inventor:William Ogle Jr Bennett
Fred Koehler
Assignee:Hamilton Watch Co
Patent Date:Aug 14, 1951
Patent Type:Improvement

Pallet Stone Set Stone

Patent Number:2564650
Description:Pallet Stone Set Stone
Inventor:Haaften Egbert Van
Arthur Brock Sinkler
Assignee:Hamilton Watch Co
Patent Date:Aug 14, 1951
Patent Type:Improvement

Comparator Guage

Patent Number:2568981
Description:Comparator Guage
Inventor:William Ogle Jr Bennett
Assignee:Hamilton Watch Co
Patent Date:Sep 25, 1951
Patent Type:Improvement

Watch Electric

Patent Number:2577703
Description:Watch Electric
Inventor:Arthur E. Fillinger
Assignee:Hamilton Watch Co
Patent Date:Dec 4, 1951
Patent Type:Improvement

Combinating Unit Showcase

Patent Number:2584869
Description:Combinating Unit Showcase
Inventor:Robert J. Gunder
Assignee:Hamilton Watch Co
Patent Date:Feb 5, 1952
Patent Type:Improvement

Time Comparator

Patent Number:2593650
Description:Time Comparator
Inventor:William Ogle Jr Bennett
Assignee:Hamilton Watch Co
Patent Date:Apr 22, 1952
Patent Type:Improvement

Work Holder Orienting Device

Patent Number:2593687
Description:Work Holder Orienting Device
Inventor:Ralph Bender Mentzer
Assignee:Hamilton Watch Co
Patent Date:Apr 22, 1952
Patent Type:Improvement

Watch Maker Vise

Patent Number:2593703
Description:Watch Maker Vise
Inventor:Arthur B. Sinkler
Assignee:Hamilton Watch Co
Patent Date:Apr 22, 1952
Patent Type:Improvement

Watch Shock Absorb Bearing

Patent Number:2596449
Description:Watch Shock Absorb Bearing
Inventor:Haaften Egbert Van
Assignee:Hamilton Watch Co
Patent Date:May 13, 1952
Patent Type:Improvement

J Set Press

Patent Number:2602986
Description:J Set Press
Inventor:Joseph R. Centini
William A. Sterling
Assignee:Hamilton Watch Co
Patent Date:Jul 15, 1952
Patent Type:Improvement

Watch Case Waterproof

Patent Number:2609655
Description:Watch Case Waterproof
Inventor:Henri Edmond Vermot
Assignee:Hamilton Watch Co
Patent Date:Sep 9, 1952
Patent Type:Improvement

Measure Machine Attach

Patent Number:2610408
Description:Measure Machine Attach
Inventor:Haaften E. Van
D. Jr Hawks
Assignee:Hamilton Watch Co
Patent Date:Sep 16, 1952
Patent Type:Improvement

Font Of Numeral

Patent Number:D167547
Description:Font Of Numeral
Inventor:Henri E. Vemot
Assignee:Hamilton Watch Co
Patent Date:Sep 19, 1952
Patent Type:Design

Multiple Spring Tester

Patent Number:2614414
Description:Multiple Spring Tester
Inventor:Robert E. Schafer
Marlin I. Kreider
Assignee:Hamilton Watch Co
Patent Date:Oct 21, 1952
Patent Type:Improvement

Semiautomatic Pivot Polisher

Patent Number:2614465
Description:Semiautomatic Pivot Polisher
Inventor:James Donald Smith
John E. Russell Markert
Assignee:Hamilton Watch Co
Patent Date:Oct 21, 1952
Patent Type:Improvement

Mech Strip Deburring Tool

Patent Number:2619881
Description:Mech Strip Deburring Tool
Inventor:John H. Dudley
Assignee:Hamilton Watch Co
Patent Date:Dec 2, 1952
Patent Type:Improvement

Watch Oil

Patent Number:2636005
Description:Watch Oil
Inventor:Joseph Stanley Jr Martin
Joseph Stanley Martin
Assignee:Hamilton Watch Co
Patent Date:Apr 21, 1953
Patent Type:Improvement

Equitorque Bearing

Patent Number:2654990
Description:Equitorque Bearing
Inventor:Van James O. Le
Assignee:Hamilton Watch Co
Patent Date:Oct 13, 1953
Patent Type:Improvement

Main Spring Dynamometer

Patent Number:2655039
Description:Main Spring Dynamometer
Inventor:Haaften Egbert Van
Assignee:Hamilton Watch Co
Patent Date:Oct 13, 1953
Patent Type:Improvement

Watch Electric

Patent Number:2662366
Description:Watch Electric
Inventor:Fred Koehler
Assignee:Hamilton Watch Co
Patent Date:Dec 15, 1953
Patent Type:Improvement

Hardness Tester

Patent Number:2662397
Description:Hardness Tester
Inventor:David C. Goldberg
Robert E. Schafer
Assignee:Hamilton Watch Co
Patent Date:Dec 15, 1953
Patent Type:Improvement

Watch Balance Bar

Patent Number:2665546
Description:Watch Balance Bar
Inventor:Haaften Egbert Van
Assignee:Hamilton Watch Co
Patent Date:Jan 12, 1954
Patent Type:Improvement

Wind Stem

Patent Number:2690644
Description:Wind Stem
Inventor:Henri E. Vermot
Assignee:Hamilton Watch Co
Patent Date:Oct 5, 1954
Patent Type:Improvement

Watch Crown

Patent Number:2690645
Description:Watch Crown
Inventor:Herman Rueger
Assignee:Hamilton Watch Co
Patent Date:Oct 5, 1954
Patent Type:Improvement

Barrel Cap Apply And Endshake Adjust Mach

Patent Number:2690688
Description:Barrel Cap Apply And Endshake Adjust Mach
Inventor:Haaften Egbert Van
John Jr Reber
Assignee:Hamilton Watch Co
Patent Date:Oct 5, 1954
Patent Type:Improvement

Floating Chuck

Patent Number:2693631
Description:Floating Chuck
Inventor:Frank B. Redman
Assignee:Hamilton Watch Co
Patent Date:Nov 9, 1954
Patent Type:Improvement

Hair Spring And Balance Arm Assembly

Patent Number:2706381
Description:Hair Spring And Balance Arm Assembly
Inventor:Bruce E. Wolfe
Assignee:Hamilton Watch Co
Patent Date:Apr 19, 1955
Patent Type:Improvement

Balance Wheel Motion Limiter

Patent Number:2717487
Description:Balance Wheel Motion Limiter
Inventor:Fred Koehler
Assignee:Hamilton Watch Co
Patent Date:Sep 13, 1955
Patent Type:Improvement

Overrunning Clutch

Patent Number:2739682
Description:Overrunning Clutch
Inventor:Harry S. Detwiler
Assignee:Hamilton Watch Co
Patent Date:Mar 27, 1956
Patent Type:Improvement

Firing Pin Release Mech

Patent Number:2742860
Description:Firing Pin Release Mech
Inventor:James W. Farmer
Millard R. Thompson
Assignee:Hamilton Watch Co
Patent Date:Apr 24, 1956
Patent Type:Improvement

Watch Automatic Main Spring Wind Mech

Patent Number:2756559
Description:Watch Automatic Main Spring Wind Mech
Inventor:Kenneth W. Derr
Assignee:Hamilton Watch Co
Patent Date:Jul 31, 1956
Patent Type:Improvement

Watch Wrist Battery Operated Electro Magnetic

Patent Number:764450
Description:Watch Wrist Battery Operated Electro Magnetic
Inventor:Hamilton Watch Co
Patent Date:Dec 28, 1956
Patent Type:Improvement

Retainer Ring For Balance Wheel Staff

Patent Number:2777279
Description:Retainer Ring For Balance Wheel Staff
Inventor:Fred Koehler
Assignee:Hamilton Watch Co
Patent Date:Jan 15, 1957
Patent Type:Improvement

Clock Hand Set Mech

Patent Number:2777280
Description:Clock Hand Set Mech
Inventor:Oscar R. Petters
Assignee:Hamilton Watch Co
Patent Date:Jan 15, 1957
Patent Type:Improvement

Clock Watch Hand Power Operate Set

Patent Number:2784546
Description:Clock Watch Hand Power Operate Set
Inventor:Oscar R. Petters
Assignee:Hamilton Watch Co
Patent Date:Mar 12, 1957
Patent Type:Improvement

Tapered Gauge For Small Hole

Patent Number:2786277
Description:Tapered Gauge For Small Hole
Inventor:Morton F. Zifferer
Assignee:Hamilton Watch Co
Patent Date:Mar 26, 1957
Patent Type:Improvement

Nonspreading Lubricant

Patent Number:2794037
Description:Nonspreading Lubricant
Inventor:Joseph S. Jr Martin
Assignee:Hamilton Watch Co
Patent Date:May 28, 1957
Patent Type:Improvement

Watch Time Zone Hr Indicator

Patent Number:2794314
Description:Watch Time Zone Hr Indicator
Inventor:Richard W. Slaugh
Assignee:Hamilton Watch Co
Patent Date:Jun 4, 1957
Patent Type:Improvement

Overbanking Preventive Means

Patent Number:2806344
Description:Overbanking Preventive Means
Inventor:Kenneth H. Schoenrock
Assignee:Hamilton Watch Co
Patent Date:Sep 17, 1957
Patent Type:Improvement

Watch Contact Mech Battery Operated

Patent Number:2806908
Description:Watch Contact Mech Battery Operated
Inventor:Horn John A. Van
Philip E. Biemiller
Assignee:Hamilton Watch Co
Patent Date:Sep 17, 1957
Patent Type:Improvement

Watch Luminous Dial

Patent Number:2823512
Description:Watch Luminous Dial
Inventor:Van James O. Le
Assignee:Hamilton Watch Co
Patent Date:Feb 18, 1958
Patent Type:Improvement

Sodium Bismuthate Cell

Patent Number:2828350
Description:Sodium Bismuthate Cell
Inventor:John W. Jr Rhyne
Assignee:Hamilton Watch Co
Patent Date:Mar 25, 1958
Patent Type:Improvement

Attach For Gauge

Patent Number:2829440
Description:Attach For Gauge
Inventor:Donald R. Pedrick
Assignee:Hamilton Watch Co
Patent Date:Apr 8, 1958
Patent Type:Improvement

Molybdenum Anode Cell

Patent Number:2837590
Description:Molybdenum Anode Cell
Inventor:John W. Jr Rhyne
Assignee:Hamilton Watch Co
Patent Date:Jun 3, 1958
Patent Type:Improvement

Germanium Anode Cell

Patent Number:2837591
Description:Germanium Anode Cell
Inventor:John W. Jr Rhyne
Assignee:Hamilton Watch Co
Patent Date:Jun 3, 1958
Patent Type:Improvement

Primary Cell Case

Patent Number:2837593
Description:Primary Cell Case
Inventor:Herman Rueger
Assignee:Hamilton Watch Co
Patent Date:Jun 3, 1958
Patent Type:Improvement

Isochronical Device

Patent Number:2838693
Description:Isochronical Device
Inventor:Horn John A. Van
Assignee:Hamilton Watch Co
Patent Date:Jun 10, 1958
Patent Type:Improvement

Pivot Polishing Machine

Patent Number:2850791
Description:Pivot Polishing Machine
Inventor:Samuel L. Evans
Assignee:Hamilton Watch Co
Patent Date:Sep 9, 1958
Patent Type:Improvement

Clock Motor Driven

Patent Number:2873572
Description:Clock Motor Driven
Inventor:Thomas B. Gibbs
Jean Fink
Assignee:Hamilton Watch Co
Patent Date:Feb 17, 1959
Patent Type:Improvement

Primary Cell Construction

Patent Number:2877285
Description:Primary Cell Construction
Inventor:Walter R. Kempf
Assignee:Hamilton Watch Co
Patent Date:Mar 10, 1959
Patent Type:Improvement

Index Mech

Patent Number:2877654
Description:Index Mech
Inventor:Philip E. Biemiller
James H. Reese
Assignee:Hamilton Watch Co
Patent Date:Mar 17, 1959
Patent Type:Improvement

Contact Spring Retainer

Patent Number:2887551
Description:Contact Spring Retainer
Inventor:Harry S. Detwiler
Assignee:Hamilton Watch Co
Patent Date:May 19, 1959
Patent Type:Improvement

Gauge Attach

Patent Number:2888751
Description:Gauge Attach
Inventor:Donald R. Pedrick
Assignee:Hamilton Watch Co
Patent Date:Jun 2, 1959
Patent Type:Improvement

Watch Electric

Patent Number:2888797
Description:Watch Electric
Inventor:Horn John A. Van
Philip E. Biemiller
Assignee:Hamilton Watch Co
Patent Date:Jun 2, 1959
Patent Type:Improvement

Epoxy Resin Cast Balance Wheel

Patent Number:2894367
Description:Epoxy Resin Cast Balance Wheel
Inventor:Wilmer J. Gingrich
Assignee:Hamilton Watch Co
Patent Date:Jul 14, 1959
Patent Type:Improvement

Drive Mech For An Index Wheel

Patent Number:2897680
Description:Drive Mech For An Index Wheel
Inventor:Daniel Fritsch
Assignee:Hamilton Watch Co
Patent Date:Aug 4, 1959
Patent Type:Improvement

Watch Electric Wrist Battery Holder

Patent Number:2907810
Description:Watch Electric Wrist Battery Holder
Inventor:Oscar R. Petters
Harwell B. Thompson
Assignee:Hamilton Watch Co
Patent Date:Oct 6, 1959
Patent Type:Improvement

Watch Electric

Patent Number:2966622
Description:Watch Electric
Inventor:Philip E. Biemiller
Marlin S. Walmer
Assignee:Hamilton Watch Co
Patent Date:Jan 27, 1960
Patent Type:Improvement

Tp Electric

Patent Number:2923123
Description:Tp Electric
Inventor:Philip E. Biemiller
Assignee:Hamilton Watch Co
Patent Date:Feb 2, 1960
Patent Type:Improvement

Watch Electric Balance Wheel

Patent Number:2924728
Description:Watch Electric Balance Wheel
Inventor:Philip E. Biemiller
Assignee:Hamilton Watch Co
Patent Date:Feb 9, 1960
Patent Type:Improvement

Clock Or Watch Balance

Patent Number:2924932
Description:Clock Or Watch Balance
Inventor:Fred Koehler
Assignee:Hamilton Watch Co
Patent Date:Feb 16, 1960
Patent Type:Improvement

Index Mech

Patent Number:2926534
Description:Index Mech
Inventor:Daniel Fritsch
Assignee:Hamilton Watch Co
Patent Date:Mar 1, 1960
Patent Type:Improvement

Counterbalance For Balance Wheel

Patent Number:2936571
Description:Counterbalance For Balance Wheel
Inventor:Philip E. Biemiller
Assignee:Hamilton Watch Co
Patent Date:May 17, 1960
Patent Type:Improvement

Watch Electric Balance Wheel

Patent Number:2936572
Description:Watch Electric Balance Wheel
Inventor:Philip E. Biemiller
Horn John A. Van
Assignee:Hamilton Watch Co
Patent Date:May 17, 1960
Patent Type:Improvement

Primary Dry Cell

Patent Number:2937222
Description:Primary Dry Cell
Inventor:Walter R. Kempf
Assignee:Hamilton Watch Co
Patent Date:May 17, 1960
Patent Type:Improvement

Watch Bearing Mount

Patent Number:2938328
Description:Watch Bearing Mount
Inventor:Kenneth W. Derr
Russell W. Haus
Assignee:Hamilton Watch Co
Patent Date:May 31, 1960
Patent Type:Improvement

Stem Actuate Second Set Stop Start Mech

Patent Number:2942410
Description:Stem Actuate Second Set Stop Start Mech
Inventor:Kenneth H. Schoenrock
Assignee:Hamilton Watch Co
Patent Date:Jun 28, 1960
Patent Type:Improvement

Watch Motor Electric

Patent Number:2948821
Description:Watch Motor Electric
Inventor:Horn John A. Van
Philip E. Biemiller
Assignee:Hamilton Watch Co
Patent Date:Aug 9, 1960
Patent Type:Improvement

Battery Case Construction

Patent Number:2951891
Description:Battery Case Construction
Inventor:Walter R. Kempf
John W. Jr Rhyne
Assignee:Hamilton Watch Co
Patent Date:Sep 6, 1960
Patent Type:Improvement

Watch Electric Balance Wheel Wrist

Patent Number:2952117
Description:Watch Electric Balance Wheel Wrist
Inventor:James H. Reese
Harry S. Detwiler
Assignee:Hamilton Watch Co
Patent Date:Sep 13, 1960
Patent Type:Improvement

Cannon Pinion Assembly

Patent Number:2952118
Description:Cannon Pinion Assembly
Inventor:Herman Rueger
Assignee:Hamilton Watch Co
Patent Date:Sep 13, 1960
Patent Type:Improvement

Watch Electric Balance

Patent Number:2953896
Description:Watch Electric Balance
Inventor:Horn John A. Van
Philip E. Biemiller
Assignee:Hamilton Watch Co
Patent Date:Sep 27, 1960
Patent Type:Improvement

Index Mech

Patent Number:2954662
Description:Index Mech
Inventor:Harry S. Detwiler
Assignee:Hamilton Watch Co
Patent Date:Oct 4, 1960
Patent Type:Improvement

Watch Contact Mech Electric

Patent Number:2954663
Description:Watch Contact Mech Electric
Inventor:Philip E. Biemiller
James H. Reese
Assignee:Hamilton Watch Co
Patent Date:Oct 4, 1960
Patent Type:Improvement

Watch Magnetic Circuit Electric Wrist

Patent Number:2954664
Description:Watch Magnetic Circuit Electric Wrist
Inventor:Philip E. Biemiller
James H. Reese
Assignee:Hamilton Watch Co
Patent Date:Oct 4, 1960
Patent Type:Improvement

Tp Electric Contact Mech

Patent Number:2956142
Description:Tp Electric Contact Mech
Inventor:Fred Koehler
Assignee:Hamilton Watch Co
Patent Date:Oct 11, 1960
Patent Type:Improvement

Motor

Patent Number:2968756
Description:Motor
Inventor:Lee Devol
Assignee:Hamilton Watch Co
Patent Date:Jan 17, 1961
Patent Type:Improvement

Watch Electric Wrist

Patent Number:2972745
Description:Watch Electric Wrist
Inventor:Philip E. Biemiller
James H. Reese
Assignee:Hamilton Watch Co
Patent Date:Feb 21, 1961
Patent Type:Improvement

Watch Electric

Patent Number:2976435
Description:Watch Electric
Inventor:Horn John A. Van
Philip E. Biemiller
Assignee:Hamilton Watch Co
Patent Date:Mar 21, 1961
Patent Type:Improvement

Clock Set And Automatic Regulate

Patent Number:2976673
Description:Clock Set And Automatic Regulate
Inventor:Harwell B. Thompson
Oscar R. Petters
Assignee:Hamilton Watch Co
Patent Date:Mar 28, 1961
Patent Type:Improvement

Index Mech

Patent Number:2977750
Description:Index Mech
Inventor:Philip E. Biemiller
Kenneth H. Schoenrock
Assignee:Hamilton Watch Co
Patent Date:Apr 4, 1961
Patent Type:Improvement

Watch Electric

Patent Number:2978862
Description:Watch Electric
Inventor:Helmut Epperlein
Assignee:Hamilton Watch Co
Patent Date:Apr 11, 1961
Patent Type:Improvement

Tp Index Mech Electric

Patent Number:2981117
Description:Tp Index Mech Electric
Inventor:Philip A. Studer
Assignee:Hamilton Watch Co
Patent Date:Apr 25, 1961
Patent Type:Improvement

Primary Cell

Patent Number:2985703
Description:Primary Cell
Inventor:Walter R. Kempf
Harold S. Morgan
Assignee:Hamilton Watch Co
Patent Date:May 23, 1961
Patent Type:Improvement

Battery Clip

Patent Number:2985704
Description:Battery Clip
Inventor:Walter R. Kempf
John W. Jr Rhyne
Assignee:Hamilton Watch Co
Patent Date:May 23, 1961
Patent Type:Improvement

Battery Clip

Patent Number:2985705
Description:Battery Clip
Inventor:Frederic H. Smythe
Assignee:Hamilton Watch Co
Patent Date:May 23, 1961
Patent Type:Improvement

Short Duration Timer

Patent Number:2985776
Description:Short Duration Timer
Inventor:Herbert Hilkemeier
Assignee:Hamilton Watch Co
Patent Date:May 23, 1961
Patent Type:Improvement

Clock Battery Driven

Patent Number:2990676
Description:Clock Battery Driven
Inventor:Kaj H. Jensen
Assignee:Hamilton Watch Co
Patent Date:Jul 4, 1961
Patent Type:Improvement

Motor

Patent Number:2993159
Description:Motor
Inventor:Lee Devol
Assignee:Hamilton Watch Co
Patent Date:Jul 18, 1961
Patent Type:Improvement

Motor

Patent Number:2994023
Description:Motor
Inventor:Lee Devol
Assignee:Hamilton Watch Co
Patent Date:Jul 25, 1961
Patent Type:Improvement

Regulator Automatic

Patent Number:2994185
Description:Regulator Automatic
Inventor:John Jr Reber
Assignee:Hamilton Watch Co
Patent Date:Aug 1, 1961
Patent Type:Improvement

Watch Electric Wrist

Patent Number:2995887
Description:Watch Electric Wrist
Inventor:Blanc Robert E. Le
Assignee:Hamilton Watch Co
Patent Date:Aug 15, 1961
Patent Type:Improvement

Index & Contact Mech

Patent Number:2997839
Description:Index & Contact Mech
Inventor:Daniel Fritsch
Assignee:Hamilton Watch Co
Patent Date:Aug 29, 1961
Patent Type:Improvement

Battery Operated Timepiece

Patent Number:2997840
Description:Battery Operated Timepiece
Inventor:Herman Rueger
Assignee:Hamilton Watch Co
Patent Date:Aug 29, 1961
Patent Type:Improvement

Watch Electric

Patent Number:3010037
Description:Watch Electric
Inventor:Horn John A. Van
Philip E. Biemiller
Assignee:Hamilton Watch Co
Patent Date:Nov 21, 1961
Patent Type:Improvement

Watch Electric

Patent Number:3010075
Description:Watch Electric
Inventor:Helmut Epperlein
Assignee:Hamilton Watch Co
Patent Date:Nov 21, 1961
Patent Type:Improvement

Index Mech

Patent Number:3011305
Description:Index Mech
Inventor:Kaj H. Jensen
Assignee:Hamilton Watch Co
Patent Date:Dec 5, 1961
Patent Type:Improvement

Tp Electric Magnetic Assembly

Patent Number:3012173
Description:Tp Electric Magnetic Assembly
Inventor:Fred Koehler
Donald A. Bly
Assignee:Hamilton Watch Co
Patent Date:Dec 5, 1961
Patent Type:Improvement

Watch Electric

Patent Number:3015206
Description:Watch Electric
Inventor:Harry S. Detwiler
James H. Reese
Assignee:Hamilton Watch Co
Patent Date:Jan 2, 1962
Patent Type:Improvement

Watch Balance Wheel Assembly

Patent Number:3015207
Description:Watch Balance Wheel Assembly
Inventor:Helmut Epperlein
Assignee:Hamilton Watch Co
Patent Date:Jan 2, 1962
Patent Type:Improvement

Primary Cell

Patent Number:3015681
Description:Primary Cell
Inventor:Edgar S. Long
Assignee:Hamilton Watch Co
Patent Date:Jan 2, 1962
Patent Type:Improvement

Tp Electric Contact Mech

Patent Number:3015933
Description:Tp Electric Contact Mech
Inventor:Fred Koehler
Assignee:Hamilton Watch Co
Patent Date:Jan 9, 1962
Patent Type:Improvement

Watch Electric

Patent Number:3016685
Description:Watch Electric
Inventor:James H. Reese
Assignee:Hamilton Watch Co
Patent Date:Jan 16, 1962
Patent Type:Improvement

Hair Spring Stud

Patent Number:3016688
Description:Hair Spring Stud
Inventor:Herman Rueger
Assignee:Hamilton Watch Co
Patent Date:Jan 16, 1962
Patent Type:Improvement

Balance Wheel Overbalking Prevent Means

Patent Number:3017741
Description:Balance Wheel Overbalking Prevent Means
Inventor:Fred Koehler
Assignee:Hamilton Watch Co
Patent Date:Jan 23, 1962
Patent Type:Improvement

Modular Timer

Patent Number:3023850
Description:Modular Timer
Inventor:Oscar R. Petters
Assignee:Hamilton Watch Co
Patent Date:Mar 6, 1962
Patent Type:Improvement

Watch Device Contact Electric

Patent Number:3034284
Description:Watch Device Contact Electric
Inventor:Helmut Epperlein
Assignee:Hamilton Watch Co
Patent Date:May 15, 1962
Patent Type:Improvement

Balance Wheel Actuate Mech

Patent Number:3034285
Description:Balance Wheel Actuate Mech
Inventor:James H. Reese
Harry S. Detwiler
Assignee:Hamilton Watch Co
Patent Date:May 15, 1962
Patent Type:Improvement

Watch Contact Post

Patent Number:3040150
Description:Watch Contact Post
Inventor:Herman Rueger
Assignee:Hamilton Watch Co
Patent Date:Jun 19, 1962
Patent Type:Improvement

Index Mech

Patent Number:3041818
Description:Index Mech
Inventor:Kaj H. Jensen
Assignee:Hamilton Watch Co
Patent Date:Jul 3, 1962
Patent Type:Improvement

Clock Radio Sleep Switch

Patent Number:3052766
Description:Clock Radio Sleep Switch
Inventor:Fred Koehler
Assignee:Hamilton Watch Co
Patent Date:Aug 4, 1962
Patent Type:Improvement

Watch Electric

Patent Number:3048004
Description:Watch Electric
Inventor:Harry S. Detwiler
Carl E. Nelson
Assignee:Hamilton Watch Co
Patent Date:Aug 7, 1962
Patent Type:Improvement

Clock Battery House For

Patent Number:3049861
Description:Clock Battery House For
Inventor:Kaj H. Jensen
Assignee:Hamilton Watch Co
Patent Date:Aug 21, 1962
Patent Type:Improvement

Clock Auto Automatic Start Device

Patent Number:3050930
Description:Clock Auto Automatic Start Device
Inventor:Daniel Fritsch
Assignee:Hamilton Watch Co
Patent Date:Aug 28, 1962
Patent Type:Improvement

Balance Wheel Coil Mount Assembly

Patent Number:3058292
Description:Balance Wheel Coil Mount Assembly
Inventor:James H. Reese
Assignee:Hamilton Watch Co
Patent Date:Oct 16, 1962
Patent Type:Improvement

Watch Electric

Patent Number:3059412
Description:Watch Electric
Inventor:Helmut Epperlein
Assignee:Hamilton Watch Co
Patent Date:Oct 23, 1962
Patent Type:Improvement

Watch Pallet Fork Contact Index Electric

Patent Number:3059413
Description:Watch Pallet Fork Contact Index Electric
Inventor:Harry S. Detwiler
Assignee:Hamilton Watch Co
Patent Date:Oct 23, 1962
Patent Type:Improvement

Clock Radio Switch

Patent Number:3060287
Description:Clock Radio Switch
Inventor:Fred Koehler
Assignee:Hamilton Watch Co
Patent Date:Oct 23, 1962
Patent Type:Improvement

Contact Mech

Patent Number:3060675
Description:Contact Mech
Inventor:Carl A. Nelson
Assignee:Hamilton Watch Co
Patent Date:Oct 30, 1962
Patent Type:Improvement

Watch Electric Contact System

Patent Number:3060676
Description:Watch Electric Contact System
Inventor:Helmut Epperlein
Assignee:Hamilton Watch Co
Patent Date:Oct 30, 1962
Patent Type:Improvement

Coil & Method Of Process Same

Patent Number:3063136
Description:Coil & Method Of Process Same
Inventor:Ester V. Cammauf
Assignee:Hamilton Watch Co
Patent Date:Nov 13, 1962
Patent Type:Improvement

Secondary Standard Timer

Patent Number:3063233
Description:Secondary Standard Timer
Inventor:Donald A. Bly
Assignee:Hamilton Watch Co
Patent Date:Nov 13, 1962
Patent Type:Improvement

Tp Electric Contact Bridge

Patent Number:3063234
Description:Tp Electric Contact Bridge
Inventor:Harry S. Detwiler
Assignee:Hamilton Watch Co
Patent Date:Nov 13, 1962
Patent Type:Improvement

Contact & Index Mech

Patent Number:3066474
Description:Contact & Index Mech
Inventor:Harry S. Detwiler
Assignee:Hamilton Watch Co
Patent Date:Dec 4, 1962
Patent Type:Improvement

Adjust Contact System

Patent Number:3069515
Description:Adjust Contact System
Inventor:Fred Koehler
Assignee:Hamilton Watch Co
Patent Date:Dec 18, 1962
Patent Type:Improvement

Clock Electric Manual Start

Patent Number:3071920
Description:Clock Electric Manual Start
Inventor:John Jr Reber
Donald A. Bly
Assignee:Hamilton Watch Co
Patent Date:Jan 8, 1963
Patent Type:Improvement

Clock Housing

Patent Number:3090193
Description:Clock Housing
Inventor:Kaj H. Jensen
Assignee:Hamilton Watch Co
Patent Date:May 21, 1963
Patent Type:Improvement

Watch Electric Index Mech Battery Operate

Patent Number:3090245
Description:Watch Electric Index Mech Battery Operate
Inventor:John Jr Reber
Assignee:Hamilton Watch Co
Patent Date:May 21, 1963
Patent Type:Improvement

Watch Electric Balance Wheel

Patent Number:3091914
Description:Watch Electric Balance Wheel
Inventor:James H. Reese
Peter J. Serlemitsos
Assignee:Hamilton Watch Co
Patent Date:Jun 4, 1963
Patent Type:Improvement

Tp Automatic Regulator

Patent Number:3091916
Description:Tp Automatic Regulator
Inventor:Horn John A. Van
Assignee:Hamilton Watch Co
Patent Date:Jun 4, 1963
Patent Type:Improvement

Watch Electric Index System Contact

Patent Number:3095690
Description:Watch Electric Index System Contact
Inventor:Helmut Epperlein
Assignee:Hamilton Watch Co
Patent Date:Jul 2, 1963
Patent Type:Improvement

Watch Electric Transistor Control Contact

Patent Number:3098185
Description:Watch Electric Transistor Control Contact
Inventor:Roderick M. Jackson
Assignee:Hamilton Watch Co
Patent Date:Jul 16, 1963
Patent Type:Improvement

Apparatus Lapping Thin Article

Patent Number:3105328
Description:Apparatus Lapping Thin Article
Inventor:Joseph Torres
Assignee:Hamilton Watch Co
Patent Date:Oct 1, 1963
Patent Type:Improvement

Automatic Regulator

Patent Number:3113417
Description:Automatic Regulator
Inventor:Donald A. Bly
Assignee:Hamilton Watch Co
Patent Date:Dec 10, 1963
Patent Type:Improvement

Automatic Timekeeping Regulator

Patent Number:3114238
Description:Automatic Timekeeping Regulator
Inventor:Blanc Robert E. Le
Assignee:Hamilton Watch Co
Patent Date:Dec 17, 1963
Patent Type:Improvement

Tp Automatic Regulator

Patent Number:3116592
Description:Tp Automatic Regulator
Inventor:Daniel Fritsch
Assignee:Hamilton Watch Co
Patent Date:Jan 7, 1964
Patent Type:Improvement

Automatic Regulator

Patent Number:3116593
Description:Automatic Regulator
Inventor:Horn John A. Van
Assignee:Hamilton Watch Co
Patent Date:Jan 7, 1964
Patent Type:Improvement

Tp Automatic Regulate Mech

Patent Number:3116594
Description:Tp Automatic Regulate Mech
Inventor:Horn John A. Van
Assignee:Hamilton Watch Co
Patent Date:Jan 7, 1964
Patent Type:Improvement

Clock Auto Electro Magnetic Wind

Patent Number:3117255
Description:Clock Auto Electro Magnetic Wind
Inventor:Miles L. Peterson
Assignee:Hamilton Watch Co
Patent Date:Jan 7, 1964
Patent Type:Improvement

Coil Test Device A D C Balance Oscillator

Patent Number:3120637
Description:Coil Test Device A D C Balance Oscillator
Inventor:Peter J. Serlemitsos
Assignee:Hamilton Watch Co
Patent Date:Feb 4, 1964
Patent Type:Improvement

Contact Index System

Patent Number:3130537
Description:Contact Index System
Inventor:James H. Reese
Assignee:Hamilton Watch Co
Patent Date:Apr 28, 1964
Patent Type:Improvement

Watch Electric

Patent Number:3136034
Description:Watch Electric
Inventor:James H. Reese
Peter J. Serlemitsos
Assignee:Hamilton Watch Co
Patent Date:Jun 9, 1964
Patent Type:Improvement

Regulator Variable

Patent Number:3136116
Description:Regulator Variable
Inventor:Richard S. Walton
Assignee:Hamilton Watch Co
Patent Date:Jun 9, 1964
Patent Type:Improvement

Tp Limit Automatic Regulate Mech

Patent Number:3140578
Description:Tp Limit Automatic Regulate Mech
Inventor:Horn John A. Van
Assignee:Hamilton Watch Co
Patent Date:Jul 14, 1964
Patent Type:Improvement

Clock Electric Regulator Automatic

Patent Number:3142956
Description:Clock Electric Regulator Automatic
Inventor:Donald A. Bly
Blanc Robert E. Le
Assignee:Hamilton Watch Co
Patent Date:Aug 4, 1964
Patent Type:Improvement

Index Mech

Patent Number:3143848
Description:Index Mech
Inventor:Philip E. Biemiller
Kenneth H. Schoenrock
Assignee:Hamilton Watch Co
Patent Date:Aug 11, 1964
Patent Type:Improvement

Watch Or Clock Electric Escape

Patent Number:3147583
Description:Watch Or Clock Electric Escape
Inventor:Daniel Fritsch
Assignee:Hamilton Watch Co
Patent Date:Sep 8, 1964
Patent Type:Improvement

Watch Electric Contact Index System

Patent Number:3151440
Description:Watch Electric Contact Index System
Inventor:Kenneth H. Schoenrock
Assignee:Hamilton Watch Co
Patent Date:Oct 6, 1964
Patent Type:Improvement

Electric Contact Magnet Index System

Patent Number:3158988
Description:Electric Contact Magnet Index System
Inventor:Marlin S. Walmer
Assignee:Hamilton Watch Co
Patent Date:Dec 1, 1964
Patent Type:Improvement

Watch Electric Balance

Patent Number:3162996
Description:Watch Electric Balance
Inventor:Louis G. Brethauer
Assignee:Hamilton Watch Co
Patent Date:Dec 29, 1964
Patent Type:Improvement

Snap Closure Switch 1 Way Clutch Drive

Patent Number:3163727
Description:Snap Closure Switch 1 Way Clutch Drive
Inventor:Ralph G. Eshleman
Assignee:Hamilton Watch Co
Patent Date:Dec 29, 1964
Patent Type:Improvement

Watch Wrist Electric

Patent Number:3169364
Description:Watch Wrist Electric
Inventor:Philip E. Biemiller
Assignee:Hamilton Watch Co
Patent Date:Feb 16, 1965
Patent Type:Improvement

Tp Movement For Inertial System

Patent Number:3186156
Description:Tp Movement For Inertial System
Inventor:John O. James
Assignee:Hamilton Watch Co
Patent Date:Jun 1, 1965
Patent Type:Improvement

Interval Timer Control Time Relay Means

Patent Number:3188408
Description:Interval Timer Control Time Relay Means
Inventor:James W. Farmer
Assignee:Hamilton Watch Co
Patent Date:Jun 8, 1965
Patent Type:Improvement

Timer Pulse

Patent Number:3218793
Description:Timer Pulse
Inventor:Richard S. Walton
Assignee:Hamilton Watch Co
Patent Date:Nov 23, 1965
Patent Type:Improvement

Method Of Regulate & Poise Adjust

Patent Number:3225586
Description:Method Of Regulate & Poise Adjust
Inventor:John Jr Reber
Assignee:Hamilton Watch Co
Patent Date:Dec 28, 1965
Patent Type:Improvement

Clock Escape Magnetic Brake

Patent Number:3236043
Description:Clock Escape Magnetic Brake
Inventor:Richard S. Walton
Assignee:Hamilton Watch Co
Patent Date:Feb 22, 1966
Patent Type:Improvement

Tp Calendar

Patent Number:3240006
Description:Tp Calendar
Inventor:James H. Reese
Assignee:Hamilton Watch Co
Patent Date:Mar 15, 1966
Patent Type:Improvement

Watch Electric

Patent Number:3248585
Description:Watch Electric
Inventor:James H. Reese
Peter J. Seriemitsos
Assignee:Hamilton Watch Co
Patent Date:Apr 26, 1966
Patent Type:Improvement

Hair Spring Wire Bend Strength Guage

Patent Number:3248935
Description:Hair Spring Wire Bend Strength Guage
Inventor:Miles L. Peterson
Assignee:Hamilton Watch Co
Patent Date:May 3, 1966
Patent Type:Improvement

Tp Calendar

Patent Number:3258907
Description:Tp Calendar
Inventor:Luain W. Hamblin
Assignee:Hamilton Watch Co
Patent Date:Jul 5, 1966
Patent Type:Improvement

Snap Switch For Move Second Contact

Patent Number:3261935
Description:Snap Switch For Move Second Contact
Inventor:Donald J. Rogers
Assignee:Hamilton Watch Co
Patent Date:Jul 19, 1966
Patent Type:Improvement

Watch Main Spring Indicator

Patent Number:3315461
Description:Watch Main Spring Indicator
Inventor:Ralph G. Eshleman
John O. James
Assignee:Hamilton Watch Co
Patent Date:Apr 25, 1967
Patent Type:Improvement

Clock Electric Self Start

Patent Number:3332229
Description:Clock Electric Self Start
Inventor:John L. Klinck
Horn John A. Van
Assignee:Hamilton Watch Co
Patent Date:Jul 25, 1967
Patent Type:Improvement

Watch Balance Variable Inertia

Patent Number:3338048
Description:Watch Balance Variable Inertia
Inventor:Philip A. Studer
Assignee:Hamilton Watch Co
Patent Date:Aug 29, 1967
Patent Type:Improvement

Watch Electric Calendar Mech

Patent Number:3353348
Description:Watch Electric Calendar Mech
Inventor:Donald W. Brashear
Assignee:Hamilton Watch Co
Patent Date:Nov 21, 1967
Patent Type:Improvement

Watch Electric Calendar Set & Detent Mech

Patent Number:3360922
Description:Watch Electric Calendar Set & Detent Mech
Inventor:Donald J. Rogers
Assignee:Hamilton Watch Co
Patent Date:Jan 2, 1968
Patent Type:Improvement

Watch Wrist Calendar Drive

Patent Number:3367104
Description:Watch Wrist Calendar Drive
Inventor:Donald J. Rogers
Assignee:Hamilton Watch Co
Patent Date:Feb 6, 1968
Patent Type:Improvement

Watch Wrist Electric Calendar

Patent Number:3377795
Description:Watch Wrist Electric Calendar
Inventor:Donald J. Rogers
Assignee:Hamilton Watch Co
Patent Date:Apr 16, 1968
Patent Type:Improvement

Watch Wrist Electric Calendar

Patent Number:3377796
Description:Watch Wrist Electric Calendar
Inventor:Donald J. Rogers
Assignee:Hamilton Watch Co
Patent Date:Apr 16, 1968
Patent Type:Improvement

Watch Balance Regulator

Patent Number:3382667
Description:Watch Balance Regulator
Inventor:Horn John A. Van
Assignee:Hamilton Watch Co
Patent Date:May 14, 1968
Patent Type:Improvement

Watch Regulator

Patent Number:3425211
Description:Watch Regulator
Inventor:Horn John A. Van
Assignee:Hamilton Watch Co
Patent Date:Feb 4, 1969
Patent Type:Improvement

Watch Calendar Mech

Patent Number:3427798
Description:Watch Calendar Mech
Inventor:Donald J. Rogers
Horn John A. Van
Assignee:Hamilton Watch Co
Patent Date:Feb 18, 1969
Patent Type:Improvement

Watch Dial

Patent Number:3431721
Description:Watch Dial
Inventor:James R. Slaugh
Assignee:Hamilton Watch Co
Patent Date:Mar 11, 1969
Patent Type:Improvement

Watch Pallet Index Mech

Patent Number:3446007
Description:Watch Pallet Index Mech
Inventor:Nathan Cohen
Assignee:Hamilton Watch Co
Patent Date:May 27, 1969
Patent Type:Improvement

Watch Electric Wind

Patent Number:3474618
Description:Watch Electric Wind
Inventor:John I. Klinck
Assignee:Hamilton Watch Co
Patent Date:Oct 28, 1969
Patent Type:Improvement

Recorder Elapsed Time

Patent Number:3479815
Description:Recorder Elapsed Time
Inventor:Stuart M. Jr Prindell
Malcolm R. Perry
Assignee:Hamilton Watch Co
Patent Date:Nov 25, 1969
Patent Type:Improvement

Watch Pallet Type Index

Patent Number:3488942
Description:Watch Pallet Type Index
Inventor:Cleon W. Hougendobler
Assignee:Hamilton Watch Co
Patent Date:Jan 13, 1970
Patent Type:Improvement

Tp High Frequency

Patent Number:3492806
Description:Tp High Frequency
Inventor:Richard S. Walton
Assignee:Hamilton Watch Co
Patent Date:Feb 3, 1970
Patent Type:Improvement

Watch Contact Index System

Patent Number:3505805
Description:Watch Contact Index System
Inventor:Nathan Cohen
James H. Eckenrode
Assignee:Hamilton Watch Co
Patent Date:Apr 14, 1970
Patent Type:Improvement

Watch Electro Mechanical

Patent Number:3509714
Description:Watch Electro Mechanical
Inventor:Richard S. Walton
Assignee:Hamilton Watch Co
Patent Date:May 5, 1970
Patent Type:Improvement

Watch Balance Electric

Patent Number:3534546
Description:Watch Balance Electric
Inventor:Van James O. Le
Assignee:Hamilton Watch Co
Patent Date:Oct 20, 1970
Patent Type:Improvement

Watch Electronic

Patent Number:3538703
Description:Watch Electronic
Inventor:Richard S. Walton
Assignee:Hamilton Watch Co
Patent Date:Nov 10, 1970
Patent Type:Improvement

Watch Escape

Patent Number:3538705
Description:Watch Escape
Inventor:Malcolm R. Perry
Assignee:Hamilton Watch Co
Patent Date:Nov 10, 1970
Patent Type:Improvement

Watch Balance Electric

Patent Number:3548586
Description:Watch Balance Electric
Inventor:John L. Klinck
Assignee:Hamilton Watch Co
Patent Date:Dec 22, 1970
Patent Type:Improvement

Watch Wrist Electric Low Power

Patent Number:3560998
Description:Watch Wrist Electric Low Power
Inventor:Richard S. Walton
Assignee:Hamilton Watch Co
Patent Date:Feb 2, 1971
Patent Type:Improvement

Watch Wrist Digital

Patent Number:3566602
Description:Watch Wrist Digital
Inventor:John M. Bergey
Kenneth W. Derr
Assignee:Hamilton Watch Co
Patent Date:Mar 2, 1971
Patent Type:Improvement

Watch Electric Resist Bridge

Patent Number:3568430
Description:Watch Electric Resist Bridge
Inventor:Richard S. Walton
Assignee:Hamilton Watch Co
Patent Date:Mar 9, 1971
Patent Type:Improvement

Watch Wrist Led

Patent Number:3576099
Description:Watch Wrist Led
Inventor:Richard S. Walton
Assignee:Hamilton Watch Co
Patent Date:Apr 27, 1971
Patent Type:Improvement

Watch Jewel Shockproof

Patent Number:3590575
Description:Watch Jewel Shockproof
Inventor:James H. Eckenrode
Assignee:Hamilton Watch Co
Patent Date:Jul 6, 1971
Patent Type:Improvement

Watch Calendar Stem Set

Patent Number:3609954
Description:Watch Calendar Stem Set
Inventor:Cleon W. Hougendobler
Assignee:Hamilton Watch Co
Patent Date:Oct 5, 1971
Patent Type:Improvement

Watch Wrist Lcd

Patent Number:3613351
Description:Watch Wrist Lcd
Inventor:Richard S. Walton
Assignee:Hamilton Watch Co
Patent Date:Oct 19, 1971
Patent Type:Improvement

Watch Transducer

Patent Number:3641761
Description:Watch Transducer
Inventor:James H. Reese
Assignee:Hamilton Watch Co
Patent Date:Feb 15, 1972
Patent Type:Improvement

Watch Electronic Low Power

Patent Number:3664118
Description:Watch Electronic Low Power
Inventor:Richard S. Walton
Assignee:Hamilton Watch Co
Patent Date:May 23, 1972
Patent Type:Improvement

Watch Wrist Solid State

Patent Number:3672155
Description:Watch Wrist Solid State
Inventor:John M. Bergey
Richard S. Walton
Assignee:Hamilton Watch Co
Patent Date:Jun 27, 1972
Patent Type:Improvement

Watch Electronic

Patent Number:3676993
Description:Watch Electronic
Inventor:John M. Bergey
Van James O. Le
Assignee:Hamilton Watch Co
Patent Date:Jul 18, 1972
Patent Type:Improvement

Watch Lcd

Patent Number:3701249
Description:Watch Lcd
Inventor:John M. Bergey
Eric L. Blouch
Assignee:Hamilton Watch Co
Patent Date:Oct 31, 1972
Patent Type:Improvement

Watch Solid State

Patent Number:3707071
Description:Watch Solid State
Inventor:Richard S. Walton
Assignee:Hamilton Watch Co
Patent Date:Dec 26, 1972
Patent Type:Improvement

Watch Wrist Electronic

Patent Number:3714867
Description:Watch Wrist Electronic
Inventor:Bruno M. Dargent
Assignee:Hamilton Watch Co
Patent Date:Feb 6, 1973
Patent Type:Improvement

Watch Electronic

Patent Number:3721084
Description:Watch Electronic
Inventor:Bruno M. Dargent
Assignee:Hamilton Watch Co
Patent Date:Mar 20, 1973
Patent Type:Improvement

Watch Wrist Electronic

Patent Number:3760584
Description:Watch Wrist Electronic
Inventor:Bruno M. Dargent
Assignee:Hamilton Watch Co
Patent Date:Sep 25, 1973
Patent Type:Improvement