Patents by Inventor George K. McDonald

George K. McDonald 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).

  • Brush stick
    Patent number: 4214346
    Abstract: A brush stick for cotton gins is made of a expanded, rigid thermoplastic having closed cells on the interior and a dense, non-cellular skin. The stick is mounted on a cylinder and is used to doff cotton from a saw cylinder.
    Type: Grant
    Filed: December 26, 1978
    Date of Patent: July 29, 1980
    Assignee: George K. McDonald
    Inventor: George K. McDonald