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Vermin Exterminator for Poultry.

Description: Patent for a vermin exterminator for poultry that discharges an insecticide onto the chickens as they come in and out of the chicken house.
Date: March 21, 1911
Creator: Crawford, William Frank
Partner: UNT Libraries Government Documents Department

Cotton-Treating Machine.

Description: Patent for improved cotton treating machine that separates cotton fibers from seeds. This cotton treater keeps the cotton fibers long when separating the seeds, including illustrations.
Date: January 21, 1919
Creator: Cassel, John L.
Partner: UNT Libraries Government Documents Department
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