Pocket Watch Database
Patent Archive
#2431968
Patent Information
Timepiece Calendar
James M. Sparkes
December 2, 1947
Patent #2431968
| Patent Number: | 2431968 |
| Description: | Timepiece Calendar |
| Inventor(s): | James M. Sparkes |
| Patent Date: | Dec 2, 1947 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
