Pocket Watch Database
Patent Archive
#157154
Patent Information
Watch Balance
Earl Chapin
November 24, 1874
Patent #157154
| Patent Number: | 157154 |
| Description: | Watch Balance |
| Inventor(s): | Earl Chapin |
| Patent Date: | Nov 24, 1874 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
