Pocket Watch Database
Patent Archive
#1313304
Patent Information
Clock Secondary Electric
Frank F. Landis
August 19, 1919
Patent #1313304
| Patent Number: | 1313304 |
| Description: | Clock Secondary Electric |
| Inventor(s): | Frank F. Landis |
| Patent Date: | Aug 19, 1919 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
