Pocket Watch Database
Patent Archive
#223517
Patent Information
Clock Electric Time Register
John B. Johnson
January 13, 1880
Patent #223517
| Patent Number: | 223517 |
| Description: | Clock Electric Time Register |
| Inventor(s): | John B. Johnson |
| Patent Date: | Jan 13, 1880 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
