Patents by Inventor William R. Duey

William R. Duey 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).

  • Literature dispensing mechanism
    Patent number: 5232123
    Abstract: A literature dispensing mechanism which will dispense a single unit of literature from an orderly stack of literature when manually actuated by a coin slide.
    Type: Grant
    Filed: June 12, 1992
    Date of Patent: August 3, 1993
    Inventors: Robert G. Richardson, William R. Duey, Sherri R. Duey