Pocket Watch Database
Patent Archive
#3030763
Patent Information
Watch Case Waterproof
Hans U. Klingenberg
April 24, 1962
Patent #3030763
| Patent Number: | 3030763 |
| Description: | Watch Case Waterproof |
| Inventor(s): | Hans U. Klingenberg |
| Patent Date: | Apr 24, 1962 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
