Pocket Watch Database
Patent Archive
#821140
Patent Information
Clock Self Wind Electric
Bernhard Tropp
May 22, 1906
Patent #821140
| Patent Number: | 821140 |
| Description: | Clock Self Wind Electric |
| Inventor(s): | Bernhard Tropp |
| Assignee: | Laird William Henry |
| Patent Date: | May 22, 1906 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
