Pocket Watch Database
Patent Archive
#2228755
Patent Information
Watch Case Dustproof
Julius Dinhofer
January 14, 1941
Patent #2228755
| Patent Number: | 2228755 |
| Description: | Watch Case Dustproof |
| Inventor(s): | Julius Dinhofer |
| Patent Date: | Jan 14, 1941 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
