Patents by Inventor David E. Filsinger

David E. Filsinger 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).

  • Stuffed ribbon cartridge
    Patent number: 3973707
    Abstract: A spoolless ribbon cartridge containing a length of inked ribbon which is formed into an endless loop and stuffed into the cartridge to form a plurality of random convolutions or folds of ribbon therein. The cartridge has a specially-shaped ribbon storage compartment, in the general shape of a kidney, which compartment provides for a smooth flow of ribbon therethrough and enables a greater length of ribbon to be stored therein when compared to prior art cartridges.
    Type: Grant
    Filed: August 28, 1975
    Date of Patent: August 10, 1976
    Assignee: NCR Corporation
    Inventors: John W. Pratt, Jr., David E. Filsinger