Pocket Watch Database
Patent Archive
#31022
Patent Information
Watch Escape
Prosper Humbert
January 1, 1861
Patent #31022
| Patent Number: | 31022 |
| Description: | Watch Escape |
| Inventor(s): | Prosper Humbert |
| Patent Date: | Jan 1, 1861 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
