Pocket Watch Database
Patent Archive
#916197
Patent Information
Tool Main Spring Winder
Albert F. Robbins
March 23, 1909
Patent #916197
| Patent Number: | 916197 |
| Description: | Tool Main Spring Winder |
| Inventor(s): | Albert F. Robbins |
| Patent Date: | Mar 23, 1909 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
