Pocket Watch Database
Patent Archive
#1438153
Patent Information
Clock Dial Instructional
Joseph T. Whalen
December 5, 1922
Patent #1438153
| Patent Number: | 1438153 |
| Description: | Clock Dial Instructional |
| Inventor(s): | Joseph T. Whalen |
| Patent Date: | Dec 5, 1922 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
