Pocket Watch Database
Patent Archive
#396655
Patent Information
Clock Main Spring Power Increase
Hermann Herwig
January 22, 1889
Patent #396655
| Patent Number: | 396655 |
| Description: | Clock Main Spring Power Increase |
| Inventor(s): | Hermann Herwig |
| Patent Date: | Jan 22, 1889 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
