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Demountable Rim.

Description: Patent for improved demountable rims for automobiles that are easy to mount and detach as well as cheaper and easier to manufacture.
Date: April 27, 1920
Creator: McPherson, Arthur Edison
Partner: UNT Libraries Government Documents Department

Book-Holding Device

Description: Patent for a book-holding device that will keep books open by holding back turned pages, with illustrations.
Date: April 20, 1920
Creator: Barry, David Redmond
Partner: UNT Libraries Government Documents Department
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