Pocket Watch Database
Patent Archive
#460957
Patent Information
Watch Regulator
Armand Ducommun
October 13, 1891
Patent #460957
| Patent Number: | 460957 |
| Category: | Regulators |
| Description: | Watch Regulator |
| Inventor(s): | Armand Ducommun |
| Patent Date: | Oct 13, 1891 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
