Pocket Watch Database
Patent Archive
#1891760
Patent Information
Watch Self Wind
Emil Frey
December 20, 1932
Patent #1891760
| Patent Number: | 1891760 |
| Description: | Watch Self Wind |
| Inventor(s): | Emil Frey |
| Assignee: | Perpetual Self Wind Watch Co |
| Patent Date: | Dec 20, 1932 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
