Pocket Watch Database
Patent Archive
#3517501
Patent Information
Watch Crown
Hans Ulrich Klingenberg
June 30, 1970
Patent #3517501
| Patent Number: | 3517501 |
| Description: | Watch Crown |
| Inventor(s): | Hans Ulrich Klingenberg |
| Patent Date: | Jun 30, 1970 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
