Pocket Watch Database
Patent Archive
#156124
Patent Information
Watch Key
John S. Birch
October 20, 1874
Patent #156124
| Patent Number: | 156124 |
| Description: | Watch Key |
| Inventor(s): | John S. Birch |
| Patent Date: | Oct 20, 1874 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
