Pocket Watch Database
Patent Archive
#2564636
Patent Information
Frequency Standard
William Ogle Jr Bennett
Fred Koehler
August 14, 1951
Patent #2564636
| Manufacturer: | Hamilton |
| Patent Number: | 2564636 |
| Description: | Frequency Standard |
| Inventor(s): |
William Ogle Jr Bennett Fred Koehler |
| Assignee: | Hamilton Watch Co |
| Patent Date: | Aug 14, 1951 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
