Pocket Watch Database
Patent Archive
#1838790
Patent Information
Watch Case With Nonbreakable Crystal Dustproof
Henri Schwob
John M. Tripet
December 29, 1931
Patent #1838790
| Patent Number: | 1838790 |
| Description: | Watch Case With Nonbreakable Crystal Dustproof |
| Inventor(s): |
Henri Schwob John M. Tripet |
| Assignee: | Alleta Co Inc |
| Patent Date: | Dec 29, 1931 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
