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Steam Engine

Description: Patent for steam engine. Illustration included.
Date: May 11, 1909
Creator: Hill, John A. & Hill, Melvin W.
Partner: UNT Libraries Government Documents Department

Cotton-Cleaner.

Description: Patent for a machine that cleans cotton by placing the seed into a rotating cylinder it is carried and removed using air presser through spiral fan blades and pins to rid impurities, including illustrations.
Date: September 11, 1860
Creator: Smith, Charles
Partner: UNT Libraries Government Documents Department
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