Pocket Watch Database
Patent Archive
#512454
Patent Information
Timer Telephone
Charles Stever
January 9, 1894
Patent #512454
| Patent Number: | 512454 |
| Description: | Timer Telephone |
| Inventor(s): | Charles Stever |
| Patent Date: | Jan 9, 1894 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
