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Nut-Lock.

Description: Patent for new qualities of nut-lock security, efficiency, and convenience, including illustrations.
Date: April 24, 1906
Creator: Payne, Lewis.
Partner: UNT Libraries Government Documents Department

Listing-Plow.

Description: Patent for a listing plow that can be used in any type of soil.
Date: September 24, 1907
Creator: Persson, Gottfrid
Partner: UNT Libraries Government Documents Department

Improvement in Pen-Holders.

Description: Patent for new improvements on the design of the pen-holder, including illustrations.
Date: January 24, 1871
Creator: George, Alfred M.
Partner: UNT Libraries Government Documents Department

Railway-Track Brace

Description: Patent for a brace for railway tracks. Illustrations included.
Date: December 24, 1912
Creator: Reid, John M.
Partner: UNT Libraries Government Documents Department
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