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Plow.

Description: Patent for improvements in plows so that it can be adjusted more easily while being overall easy to operate.
Date: August 26, 1890
Creator: Muesse, Robert
Partner: UNT Libraries Government Documents Department

Railroad-Tie.

Description: Patent for a new railroad tie constructed of concrete material with detachable internal reinforcements used to support the rail fastening system, with illustrations.
Date: March 31, 1914
Creator: Baca, August
Partner: UNT Libraries Government Documents Department
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