Pocket Watch Database
Patent Archive
#3130538
Patent Information
Watch Self Wind Barrel
Fritz Straumann
Jean Bourquin
April 28, 1964
Patent #3130538
| Patent Number: | 3130538 |
| Description: | Watch Self Wind Barrel |
| Inventor(s): |
Fritz Straumann Jean Bourquin |
| Assignee: | Institut Dr Ing Reinhard Strau |
| Patent Date: | Apr 28, 1964 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
