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Improvement in Windmills.

Description: Patent for the improvement of windmills, including illustrations.
Date: September 29, 1874
Creator: Symthe, Peyton.
Partner: UNT Libraries Government Documents Department

Improvement in Medicinal Extracts.

Description: Patent for the extract of Dasylirion graminifolium. This describes the method of acquiring the extract as well as illnesses the extra is purported to treat.
Date: July 14, 1874
Creator: Bihl, Charles A.
Partner: UNT Libraries Government Documents Department

Improvement in Animal-Traps.

Description: Patent for an improvement in animal traps to catch animals without bait, including illustrations.
Date: March 10, 1874
Creator: De Vilbiss, John W., Jr.
Partner: UNT Libraries Government Documents Department

Imporvement in Combined Spades and Hoes.

Description: Patent for a new combination/convertible spade and hoe design with instructions and illustrations.
Date: September 11, 1874
Creator: Cassiano, I. Ygnacio
Partner: UNT Libraries Government Documents Department

Improvement in Scrapers.

Description: Patent for a horse-drawn excavator that includes a scoop attached to wheels.
Date: June 16, 1874
Creator: Arcos, Ignacio
Partner: UNT Libraries Government Documents Department
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