Pocket Watch Database
Patent Archive
#1800498
Patent Information
Watch Movement Control Wind & Set Means
John B. Graffen Berger
April 14, 1931
Patent #1800498
| Patent Number: | 1800498 |
| Description: | Watch Movement Control Wind & Set Means |
| Inventor(s): | John B. Graffen Berger |
| Patent Date: | Apr 14, 1931 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
