Pocket Watch Database
Patent Archive
#450529
Patent Information
Pendulum Bob Supplemental
Henry S. Prentiss
April 14, 1891
Patent #450529
| Patent Number: | 450529 |
| Description: | Pendulum Bob Supplemental |
| Inventor(s): | Henry S. Prentiss |
| Patent Date: | Apr 14, 1891 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
