Pocket Watch Database
Patent Archive
#515189
Patent Information
Electric Time Alarm
John C. Betts
February 20, 1894
Patent #515189
Patent Number: | 515189 |
Description: | Electric Time Alarm |
Inventor(s): | John C. Betts |
Patent Date: | Feb 20, 1894 |
Registration Type: | Patent |
External Research: | https://www.google.c… |
Patent Document: |