Pocket Watch Database
Patent Archive
#477206
Patent Information
Clock Electric Alarm
Benjamin Franklin
June 21, 1892
Patent #477206
| Patent Number: | 477206 |
| Description: | Clock Electric Alarm |
| Inventor(s): | Benjamin Franklin |
| Assignee: | Beach Calvin R |
| Patent Date: | Jun 21, 1892 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
