Pocket Watch Database
Patent Archive
#253783
Patent Information
Clock Secondary Electric
D. Fred Sweet
February 14, 1882
Patent #253783
| Patent Number: | 253783 |
| Description: | Clock Secondary Electric |
| Inventor(s): | D. Fred Sweet |
| Patent Date: | Feb 14, 1882 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
