Patents by Inventor William V. Gurzenda

William V. Gurzenda 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).

  • Door bumper
    Patent number: 3994043
    Abstract: A door bumper having no visible screws for mounting on a wall for contact with a door knob when the door is opened. A rubber bumper is carried on a housing which is non-detachably secured to the wall by a backplate. The backplate has a flattened V shaped spring with two radially outwardly extending ends which engage a circular notch extending around the inner periphery of the housing.
    Type: Grant
    Filed: September 19, 1975
    Date of Patent: November 30, 1976
    Assignee: Rockwood Manufacturing Company
    Inventor: William V. Gurzenda