Pocket Watch Database
Patent Archive
#1439120
Patent Information
Calendar Automatic
Julius F. Radtke
December 19, 1922
Patent #1439120
| Patent Number: | 1439120 |
| Description: | Calendar Automatic |
| Inventor(s): | Julius F. Radtke |
| Patent Date: | Dec 19, 1922 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
