Pocket Watch Database
Patent Archive
#3478509
Patent Information
Watch Bearing
Fritz Marti
November 18, 1969
Patent #3478509
| Patent Number: | 3478509 |
| Description: | Watch Bearing |
| Inventor(s): | Fritz Marti |
| Assignee: | Portescap Le Porte-echappement |
| Patent Date: | Nov 18, 1969 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
