Pocket Watch Database
Patent Archive
#2756559
Patent Information
Watch Automatic Main Spring Wind Mech
Kenneth W. Derr
July 31, 1956
Patent #2756559
| Manufacturer: | Hamilton |
| Patent Number: | 2756559 |
| Description: | Watch Automatic Main Spring Wind Mech |
| Inventor(s): | Kenneth W. Derr |
| Assignee: | Hamilton Watch Co |
| Patent Date: | Jul 31, 1956 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
