Patents by Inventor Robert W. Petree, Jr.

Robert W. Petree, Jr. 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).

  • Concealed door frame security device
    Patent number: 4770452
    Abstract: A security device provided for use in a door frame assembly has a door jamb disposed in surrounding relation to a door. The security device is comprised of an elongated, rigid plate inserted into a slot and firmly anchored in place in the door jamb in spaced parallel relation to the free vertical edge of the door. The plate has an opening aligned with an opening in the door jamb, and the spacing between the plate and face of the door jamb is such that a deadbolt on the door will project through the aligned openings in the door jamb and plate.
    Type: Grant
    Filed: September 19, 1986
    Date of Patent: September 13, 1988
    Inventor: Robert W. Petree, Jr.