Pocket Watch Database
Patent Archive
#1304421
Patent Information
Watch Crystal
Louis E. F. Wachter
May 20, 1919
Patent #1304421
| Patent Number: | 1304421 |
| Description: | Watch Crystal |
| Inventor(s): | Louis E. F. Wachter |
| Patent Date: | May 20, 1919 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
