Pocket Watch Database
Patent Archive
#413368
Patent Information
Clock Calendar
John H. Hughes
October 22, 1889
Patent #413368
| Patent Number: | 413368 |
| Description: | Clock Calendar |
| Inventor(s): | John H. Hughes |
| Patent Date: | Oct 22, 1889 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
