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Rail-Joint

Description: Patent for a joint designed to stop the ends of rails from moving.
Date: October 6, 1914
Creator: Fedrick, Samuel B.
Partner: UNT Libraries Government Documents Department

Film Feeding Mechanism for Cameras

Description: Patent for a film feeding mechanism for cameras. Illustrations included.
Date: August 6, 1912
Creator: Caldwell, Elmer A.
Partner: UNT Libraries Government Documents Department
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