Pocket Watch Database
Patent Archive
#313962
Patent Information
Watch Escape Chronograph
John George B. St
March 17, 1885
Patent #313962
| Patent Number: | 313962 |
| Description: | Watch Escape Chronograph |
| Inventor(s): | John George B. St |
| Patent Date: | Mar 17, 1885 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
