Pocket Watch Database
Patent Archive
#1986328
Patent Information
Watch Waterproof Protection
Alfred Dreyfus
January 1, 1935
Patent #1986328
| Patent Number: | 1986328 |
| Description: | Watch Waterproof Protection |
| Inventor(s): | Alfred Dreyfus |
| Assignee: | Dreyfus Alfred |
| Patent Date: | Jan 1, 1935 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
