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Railway Switch

Description: Patent for a railway switch. Illustration included.
Date: August 18, 1903
Creator: Aley, Frank W.
Partner: UNT Libraries Government Documents Department

Depurator

Description: Patent for a depurator. "This invention realtes to an improved vacuum apparatus for medicinal purposes" (line 11-12). Illustrations included.
Date: August 4, 1903
Creator: Richards, Lloyd H.
Partner: UNT Libraries Government Documents Department
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