Pocket Watch Database
Patent Archive
#677638
Patent Information
Watch Balance Staff
Duane H. Church
July 2, 1901
Patent #677638
| Manufacturer: | Waltham |
| Patent Number: | 677638 |
| Description: | Watch Balance Staff |
| Inventor(s): | Duane H. Church |
| Patent Date: | Jul 2, 1901 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
