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Wrench.

Description: Patent for a wrench which "may be efficiently employed in places which are inaccessible to the ordinary wrench."
Date: August 24, 1915
Creator: Culbertson, Charles P.
Partner: UNT Libraries Government Documents Department

Plow.

Description: Patent for an improvement to the plow by providing a plastic or plastic-like material to help sticky, thick soil and clay to glide over the surface and decrease frictional resistance, including illustrations.
Date: March 2, 1915
Creator: Fleehearty, Edward L.
Partner: UNT Libraries Government Documents Department

Threshing-Machine

Description: Patent for a threshing machine "especially adapted for the cutting and threshing of small grain" (lines 15-16). Illustrations included.
Date: May 12, 1908
Creator: Haynes, Thomas Stanley
Partner: UNT Libraries Government Documents Department

Threshing-Machine.

Description: Patent for a harvester in a threshing machine, which can be put at different levels from the ground.
Date: August 31, 1909
Creator: Haynes, Thomas S.
Partner: UNT Libraries Government Documents Department

Tank Furnace

Description: Patent for a tank-furnace for the purpose of an easier way to heat water. Development and use are within text; includes illustrations to demonstrate the object of the patent.
Date: November 27, 1917
Creator: Yaeger, George
Partner: UNT Libraries Government Documents Department

Tire-Core.

Description: Patent for a tire core with interlocking sections that can be removed easily from built tires to reuse, including illustrations.
Date: December 21, 1920
Creator: Gillette, Walter S.
Partner: UNT Libraries Government Documents Department

Ignition System for Internal-Combustion Engines.

Description: Patent for Ignition System for Internal-Combustion Engines. "This invention relates to ignition systems for internal combustion engines and comprehends the provision of a dual ignition system for multiple cylinder engines with which either battery or magneto current may be used and having only two coils, one with a vibrator for the magneto current and one without a vibrator for the battery current." (line - 2)
Date: April 23, 1918
Creator: Richards, Harvey B.
Partner: UNT Libraries Government Documents Department

Pipe-Grapple.

Description: Patent for an improved pipe gripping mechanism which engages the interior of a pipe or tube.
Date: June 30, 1914
Creator: Martin, John E.
Partner: UNT Libraries Government Documents Department

Door-Check.

Description: Patent for a door check that holds the door at any point when it is swinging closed.
Date: July 18, 1911
Creator: Martin, Joseph M.
Partner: UNT Libraries Government Documents Department
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