Pocket Watch Database
Patent Archive
#2733567
Patent Information
Watch Crown Fluidtight Construction
Conrad Zellweger
February 7, 1956
Patent #2733567
| Patent Number: | 2733567 |
| Description: | Watch Crown Fluidtight Construction |
| Inventor(s): | Conrad Zellweger |
| Assignee: | La Nationale S A |
| Patent Date: | Feb 7, 1956 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
