Patents by Inventor Michael S. Kumpf

Michael S. Kumpf 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).

  • Multi-ribbon cassette and ribbon drive
    Patent number: 3995731
    Abstract: A cassette contains a pair of endless printing ribbons on separate spools, each ribbon having an independent drive with a mechanism provided to enable shifting from one drive to the other, thereby permitting selection of one or the other ribbon.
    Type: Grant
    Filed: June 2, 1975
    Date of Patent: December 7, 1976
    Assignee: NCR Corporation
    Inventors: Harry R. Miller, Michael S. Kumpf