Pocket Watch Database
Patent Archive
#403100
Patent Information
Clock Electric Alarm
Thomas H. Grady
May 14, 1889
Patent #403100
| Patent Number: | 403100 |
| Description: | Clock Electric Alarm |
| Inventor(s): | Thomas H. Grady |
| Patent Date: | May 14, 1889 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
