Pocket Watch Database
Patent Archive
#369560
Patent Information
Watch Spring Apparatus For Tempering
Frederick Sedgwick
September 6, 1887
Patent #369560
| Patent Number: | 369560 |
| Description: | Watch Spring Apparatus For Tempering |
| Inventor(s): | Frederick Sedgwick |
| Patent Date: | Sep 6, 1887 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
