Pocket Watch Database
Patent Archive
#1219108
Patent Information
Clock Electric Self Wind
Charles C. Bertsch
Walter H. Kallenbach
March 13, 1917
Patent #1219108
| Patent Number: | 1219108 |
| Description: | Clock Electric Self Wind |
| Inventor(s): |
Charles C. Bertsch Walter H. Kallenbach |
| Patent Date: | Mar 13, 1917 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
