Pocket Watch Database
Patent Archive
#664403
Patent Information
Pendulum Lock Device
Harry Groom
December 25, 1900
Patent #664403
| Patent Number: | 664403 |
| Description: | Pendulum Lock Device |
| Inventor(s): | Harry Groom |
| Assignee: | Sempire Clock Co |
| Patent Date: | Dec 25, 1900 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
