Pocket Watch Database
Patent Archive
#156480
Patent Information
Main Spring
James C. Edwards
November 3, 1874
Patent #156480
| Patent Number: | 156480 |
| Description: | Main Spring |
| Inventor(s): | James C. Edwards |
| Patent Date: | Nov 3, 1874 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
