Pocket Watch Database
Patent Archive
#446916
Patent Information
Calendar Perpetual
Cassius M. Hamilton
February 24, 1891
Patent #446916
| Patent Number: | 446916 |
| Description: | Calendar Perpetual |
| Inventor(s): | Cassius M. Hamilton |
| Patent Date: | Feb 24, 1891 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
