Pocket Watch Database
Patent Archive
#433255
Patent Information
Watch Balance Wheel
Paul Perret
July 29, 1890
Patent #433255
| Patent Number: | 433255 |
| Description: | Watch Balance Wheel |
| Inventor(s): | Paul Perret |
| Patent Date: | Jul 29, 1890 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
