Pocket Watch Database
Patent Archive
#883273
Patent Information
Timer Electric Alarm
Charles E. Avery
March 31, 1908
Patent #883273
| Patent Number: | 883273 |
| Description: | Timer Electric Alarm |
| Inventor(s): | Charles E. Avery |
| Patent Date: | Mar 31, 1908 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
