Pocket Watch Database
Patent Archive
#2209642
Patent Information
Watch Movement Calendar
Hans Aeberhardt
July 30, 1940
Patent #2209642
| Patent Number: | 2209642 |
| Description: | Watch Movement Calendar |
| Inventor(s): | Hans Aeberhardt |
| Patent Date: | Jul 30, 1940 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
