Patents by Inventor Albert Dunner

Albert Dunner 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).

  • Cassette for winding up photographic strip material
    Patent number: 5284305
    Abstract: The cassette comprises two pivotable guide members (6,7) which guide the photographic strip material (B) round a hollow cylindrical guide sleeve (5) which can be slipped onto a rotatably mounted, drivable winding core (4) and, on being slipped onto that winding core, locks into its operating position.
    Type: Grant
    Filed: June 28, 1991
    Date of Patent: February 8, 1994
    Assignee: Gretag Systems, Inc.
    Inventors: Werner Gassmann, Albert Dunner, Erich G. Binder