Pocket Watch Database
Patent Archive
#2720748
Patent Information
Watch Case Watertight
Armin Gisiger
October 18, 1955
Patent #2720748
| Patent Number: | 2720748 |
| Description: | Watch Case Watertight |
| Inventor(s): | Armin Gisiger |
| Patent Date: | Oct 18, 1955 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
