Pocket Watch Database
Patent Archive
#1990645
Patent Information
Clock Electric Digital
Frederick A. Greenawalt
February 12, 1935
Patent #1990645
| Patent Number: | 1990645 |
| Description: | Clock Electric Digital |
| Inventor(s): | Frederick A. Greenawalt |
| Assignee: | Pennwood Co |
| Patent Date: | Feb 12, 1935 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
