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Improvement in Medical Compounds.

Description: Patent for a new medical compound to remedy chills and fever.
Date: February 7, 1871
Creator: Lister, Henry
Partner: UNT Libraries Government Documents Department

Oxygen-Generator

Description: Patent for an oxygen generator that refills as it is emptied.
Date: February 7, 1911
Creator: Bradley, Richard Clinton
Partner: UNT Libraries Government Documents Department

Rail Joint

Description: Patent for a rail joint. Illustration included.
Date: February 7, 1905
Creator: Riggs, James M.
Partner: UNT Libraries Government Documents Department

Rotary Engine

Description: Patent for a rotary engine with a better flow of fluid to the casing.
Date: February 7, 1911
Creator: Nichols, Franklin Priestley
Partner: UNT Libraries Government Documents Department

Swing.

Description: Patent for improvement in swings, including instructions and illustrations.
Date: February 7, 1888
Creator: Goebel, Herman A.
Partner: UNT Libraries Government Documents Department
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