Patents by Inventor Roy O. Cook

Roy O. Cook 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).

  • Security device
    Patent number: 4279137
    Abstract: A device for preventing a dead bolt handle from being turned, comprising a knob encompassing portion depending from a handle accommodating housing. Said encompassing portion and housing so coact that the tendency of said device to rotate on said handle being turned is barred by said knob encompassing portion abutting a door knob.
    Type: Grant
    Filed: September 6, 1979
    Date of Patent: July 21, 1981
    Inventor: Roy O. Cook