Pocket Watch Database
Patent Archive
#2395328
Patent Information
Watch Observation Box For Timing
Robert Daniel Heffelfinger
February 19, 1946
Patent #2395328
| Manufacturer: | Hamilton |
| Patent Number: | 2395328 |
| Description: | Watch Observation Box For Timing |
| Inventor(s): | Robert Daniel Heffelfinger |
| Assignee: | Hamilton Watch Co |
| Patent Date: | Feb 19, 1946 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
