Pocket Watch Database
Patent Archive
#1475068
Patent Information
Clock Escape
Porter Hamilton
November 20, 1923
Patent #1475068
| Patent Number: | 1475068 |
| Description: | Clock Escape |
| Inventor(s): | Porter Hamilton |
| Patent Date: | Nov 20, 1923 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
