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Wrench.

Description: Patent for a wrench that allows adjustment to two locked positions with a slot and stud mechanism.
Date: May 22, 1917
Creator: Bledsoe, Yancy M.
Partner: UNT Libraries Government Documents Department

Plow Point.

Description: Patent for a new and improved plow-point. This design consists in "[t]he combination, with the double mold-board rigidly fixed to the curved beam in the rear of the lower end thereof, of the point having symmetrical corners and lugs adapted to pass beneath the front edge of said mold-board and prevent rocking of the point upon the beam, to which alone it is attached, and bolts securing said point in position" (lines 65-73).
Date: May 22, 1888
Creator: Martin, Isaac Jasper
Partner: UNT Libraries Government Documents Department
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