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Nut Lock

Description: Patent for a mechanism to lock a nut in place on a bolt that also automatically releases when a wrench is applied to turn the nut.
Date: August 4, 1914
Creator: Edwards, Whitfield H.
Partner: UNT Libraries Government Documents Department

Combination Plow and Pulverizer.

Description: Patent for a combination plow and pulverizer, designed for the purpose of improved plowing and sowing of seed, with illustrations and explanations.
Date: August 20, 1918
Creator: Curtis, William W.
Partner: UNT Libraries Government Documents Department
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