Pocket Watch Database
Patent Archive
#733369
Patent Information
Clock Current Switch
Ira S. Callender
Edwin F. Callender
July 14, 1903
Patent #733369
Patent Number: | 733369 |
Description: | Clock Current Switch |
Inventor(s): |
Ira S. Callender Edwin F. Callender |
Patent Date: | Jul 14, 1903 |
Registration Type: | Patent |
External Research: | https://www.google.c… |
Patent Document: |