Patents by Inventor Qunion R. Duff

Qunion R. Duff has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Cattle de-horning apparatus
    Patent number: 3995369
    Abstract: A power-actuated de-horning system is provided wherein a guillotine-type blade is driven through the horn of an animal by means of a hydraulically-actuated cylinder and piston assembly.
    Type: Grant
    Filed: August 28, 1975
    Date of Patent: December 7, 1976
    Inventor: Qunion R. Duff