Pocket Watch Database
Patent Archive
#31543
Patent Information
Chronometer Escape
Prosper Humbert
February 26, 1861
Patent #31543
| Patent Number: | 31543 |
| Description: | Chronometer Escape |
| Inventor(s): | Prosper Humbert |
| Patent Date: | Feb 26, 1861 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
