Pocket Watch Database
Patent Archive
#443384
Patent Information
Watch Cannon Pinion
Frank P. Allen
December 23, 1890
Patent #443384
| Patent Number: | 443384 |
| Description: | Watch Cannon Pinion |
| Inventor(s): | Frank P. Allen |
| Patent Date: | Dec 23, 1890 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
