Pocket Watch Database
Patent Archive
#892642
Patent Information
Watch Case & Calendar Perpetual
John M. Biggs
July 7, 1908
Patent #892642
| Patent Number: | 892642 |
| Description: | Watch Case & Calendar Perpetual |
| Inventor(s): | John M. Biggs |
| Patent Date: | Jul 7, 1908 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
