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Colter.

Description: Patent for a Colter attachment for plows that can be adjusted to various angles and increases the efficiency of the plow.
Date: August 31, 1920
Creator: Dillon, Robert L.
Partner: UNT Libraries Government Documents Department

Gun-Magazine.

Description: Patent for an improved gun magazine that consists of a glass lining with openings on its sides.
Date: August 1, 1893
Creator: Whitten, Burrel Franklin & Porcher, Joseph Ford
Partner: UNT Libraries Government Documents Department

Plow.

Description: Patent for improvements in reversible plows: "The object of the present invention is to simplify and improve the construction of reversible plows and enable them to be adjusted to any desired depth" (lines 9-12).
Date: August 18, 1891
Creator: McKay, Robert B.
Partner: UNT Libraries Government Documents Department
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