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Well-Drill Wrench

Description: Patent for a wrench for drill pipes used in drilling wells. Illustrations included.
Date: February 18, 1913
Creator: Osborne, William Rush & Lebus, George Franklin
Partner: UNT Libraries Government Documents Department

Crossing-Gate.

Description: Patent for improvements to crossing gates through a device that helps facilitate the gates' automatic closing and opening position.
Date: September 18, 1917
Creator: Hood, Lemuel L.
Partner: UNT Libraries Government Documents Department
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