Pocket Watch Database
Patent Archive
#977994
Patent Information
Main Spring Barrel
John Austin
December 6, 1910
Patent #977994
| Patent Number: | 977994 |
| Description: | Main Spring Barrel |
| Inventor(s): | John Austin |
| Patent Date: | Dec 6, 1910 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
