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: |