Pocket Watch Database
Patent Archive
#88836
Patent Information
Watch Key
John S. Birch
April 13, 1869
Patent #88836
| Patent Number: | 88836 |
| Description: | Watch Key |
| Inventor(s): | John S. Birch |
| Patent Date: | Apr 13, 1869 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
