Patents by Inventor Everett C. Pennock

Everett C. Pennock 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).

  • Pet door
    Patent number: 3978616
    Abstract: A door for closing an opening through a pet confining wall in a building, kennel, pen or the like, said door having a peripheral frame for mounting in the wall opening, a door member having its upper edge portion hinged to the frame on a horizontal axis for swinging movement of the door in either direction from a vertical closed position within the frame, and a spring tensioned slide acting between the frame and a cam on the upper edge of the door to yieldably retain the door in closed position.
    Type: Grant
    Filed: June 4, 1975
    Date of Patent: September 7, 1976
    Assignee: North States Industries, Inc.
    Inventor: Everett C. Pennock