Pocket Watch Database
Patent Archive
#1222757
Patent Information
Pendulum Escape
Ferdinand Gundorph
April 17, 1917
Patent #1222757
| Patent Number: | 1222757 |
| Description: | Pendulum Escape |
| Inventor(s): | Ferdinand Gundorph |
| Patent Date: | Apr 17, 1917 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
