Pocket Watch Database
Patent Archive
#436415
Patent Information
Calendar
Henry S. Hack
September 16, 1890
Patent #436415
| Patent Number: | 436415 |
| Description: | Calendar |
| Inventor(s): | Henry S. Hack |
| Patent Date: | Sep 16, 1890 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
