Pocket Watch Database
Patent Archive
#1313291
Patent Information
Watch Compensate Balance Spring Chronometer
Charles Edouard Guillaume
August 19, 1919
Patent #1313291
Manufacturer: | Hamilton |
Patent Number: | 1313291 |
Description: | Watch Compensate Balance Spring Chronometer |
Inventor(s): | Charles Edouard Guillaume |
Patent Date: | Aug 19, 1919 |
Registration Type: | Patent |
External Research: | https://www.google.c… |
Patent Document: |