Pocket Watch Database
Patent Archive
#197687
Patent Information
Watch Regulator
John Thomson
November 27, 1877
Patent #197687
| Patent Number: | 197687 |
| Category: | Regulators |
| Description: | Watch Regulator |
| Inventor(s): | John Thomson |
| Patent Date: | Nov 27, 1877 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
