Pocket Watch Database
Patent Archive
#639821
Patent Information
Watch Balance Wheel Mfg
Alfred Mathey-doret
December 26, 1899
Patent #639821
| Patent Number: | 639821 |
| Description: | Watch Balance Wheel Mfg |
| Inventor(s): | Alfred Mathey-doret |
| Patent Date: | Dec 26, 1899 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
