Pocket Watch Database
Patent Archive
#185661
Patent Information
Watch Safety Pinion
James B. Ferguson
Joseph S. Barnum
December 26, 1876
Patent #185661
| Patent Number: | 185661 |
| Category: | Safety Pinion |
| Description: | Watch Safety Pinion |
| Inventor(s): |
James B. Ferguson Joseph S. Barnum |
| Patent Date: | Dec 26, 1876 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
