Pocket Watch Database
Patent Archive
#436783
Patent Information
Clock Duplex Escape
Charles B. Hibbard
September 23, 1890
Patent #436783
| Patent Number: | 436783 |
| Description: | Clock Duplex Escape |
| Inventor(s): | Charles B. Hibbard |
| Patent Date: | Sep 23, 1890 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
