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Train-Order Holder.

Description: Patent for Train-Order Holder designed to keep sheets of paper secure and in place to prevent writing on margins and displacement.
Date: November 30, 1920
Creator: Crady, Daniel R.
Partner: UNT Libraries Government Documents Department

Railroad-Signal

Description: Patent for a railroad signal which will prevent train collisions at railway crossings, with illustrations.
Date: February 17, 1920
Creator: Humphrys, Sidney E.
Partner: UNT Libraries Government Documents Department

Pipe and Like Stem.

Description: Patent for improved smoking equipment stems which prevents saliva from running down the stem. The end of the stem has a new design which extends upwards and then wraps forward and downward, leaving a slot where no saliva can enter.
Date: February 22, 1921
Creator: Crossman, Alvin Amos
Partner: UNT Libraries Government Documents Department
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