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Internal-Combustion Engine.

Description: Patent for a two-cycle, reciprocating piston internal combustion engine that preheats incoming fuel and is designed to run smoothly and reduce vibration, including illustrations.
Date: January 12, 1915
Creator: Bukoviny, Frank W.
Partner: UNT Libraries Government Documents Department

Door-Hanger

Description: Patent for a door hanger for sliding doors to prevent them from swinging outward.
Date: January 28, 1913
Creator: Matheson, John William
Partner: UNT Libraries Government Documents Department

Egg Beater

Description: Patent for an egg beater. Illustration included.
Date: January 11, 1910
Creator: Nichols, Charles A.
Partner: UNT Libraries Government Documents Department

Aerial Vehicle

Description: Patent for an aerial vehicle. Illustrations included.
Date: January 2, 1912
Creator: Rex, Cleveland A.
Partner: UNT Libraries Government Documents Department
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