Pocket Watch Database
Patent Archive
#857668
Patent Information
Watch Friction Pinion
Wilson E. Porter
June 25, 1907
Patent #857668
| Manufacturer: | New Haven Clock Co. |
| Patent Number: | 857668 |
| Description: | Watch Friction Pinion |
| Inventor(s): | Wilson E. Porter |
| Assignee: | New Haven Clock Co |
| Patent Date: | Jun 25, 1907 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
