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Automobile-Alarm.

Description: Patent for a device to prevent the theft of automobiles capable of producing audio and visual signals as warnings of unauthorized access.
Date: April 22, 1919
Creator: Smith, Thomas H.
Partner: UNT Libraries Government Documents Department

Automatic Car-Dump

Description: Patent for automatic dumpers that can be readily and inexpensively fitted and adapted to most forms of dump car.
Date: April 22, 1913
Creator: Putnam, John J.
Partner: UNT Libraries Government Documents Department
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