Pocket Watch Database
Patent Archive
#149839
Patent Information
Watch Case Spring
Irving C. Cowles
April 21, 1874
Patent #149839
| Patent Number: | 149839 |
| Description: | Watch Case Spring |
| Inventor(s): | Irving C. Cowles |
| Patent Date: | Apr 21, 1874 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
