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Disk Plow.

Description: Patent for a disk plow modification, which allows the disk to be self-sharpening and automatically release accumulated garbage.
Date: November 4, 1919
Creator: Hoffman, George L.
Partner: UNT Libraries Government Documents Department

Door-Strip

Description: Patent for a door strip for blocking air gaps below doors.
Date: June 4, 1912
Creator: Valentine, Levi Jackson
Partner: UNT Libraries Government Documents Department

Traction-Engine

Description: Patent for a traction engine with more power in the driving shaft and reduced wasted space in the design.
Date: June 4, 1912
Creator: Cox, Oscar McGruder
Partner: UNT Libraries Government Documents Department

Cutting Mechanism for Corn-Harvesters

Description: Patent for a cutting mechanism for corn harvesters that allows the stalks to be cut more effectively while the corn is being harvested.
Date: June 4, 1912
Creator: Tilson, William H.
Partner: UNT Libraries Government Documents Department
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