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Automatic Electric Alarm.
Patent for an inexpensive, simple, and durable automatic electric alarm that allows people in house or hotel rooms, mines, ships, shops, etc. to signal for another person. The alarm is wired to a clock so it can be programmed to go off at a certain time.
Date:
January 7, 1896
Creator:
Stansel, Thomas J.
System:
The Portal to Texas History