Pocket Watch Database
Patent Archive
#3418801
Patent Information
Watch Escape Temperature Compensate
Fritz Marti
December 31, 1968
Patent #3418801
| Patent Number: | 3418801 |
| Description: | Watch Escape Temperature Compensate |
| Inventor(s): | Fritz Marti |
| Assignee: | Portescap Le Porte-echappement |
| Patent Date: | Dec 31, 1968 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
