Pocket Watch Database
Patent Archive
#107916
Patent Information
Watch Main Spring Barrel
Henry B. James
October 4, 1870
Patent #107916
| Patent Number: | 107916 |
| Description: | Watch Main Spring Barrel |
| Inventor(s): | Henry B. James |
| Patent Date: | Oct 4, 1870 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
