Pocket Watch Database
Patent Archive
#221490
Patent Information
Clock Escape
Robert S. Abernethy
November 11, 1879
Patent #221490
| Patent Number: | 221490 |
| Description: | Clock Escape |
| Inventor(s): | Robert S. Abernethy |
| Patent Date: | Nov 11, 1879 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
