Pocket Watch Database
Patent Archive
#481723
Patent Information
Railway Time Signal
Adelbert H. Thorp
August 30, 1892
Patent #481723
| Patent Number: | 481723 |
| Description: | Railway Time Signal |
| Inventor(s): | Adelbert H. Thorp |
| Patent Date: | Aug 30, 1892 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
