Patents by Inventor Richard T. Shpall

Richard T. Shpall 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).

  • Telephone guard
    Patent number: 4147903
    Abstract: A telephone guard for restriction of tampering with the set switch plungers when the handset is removed from the cradle. The guard is attached to the top (9) of the hand carrying recess and has a flexible arm (1) which engages one switch plunger (4), and which has a partial depth hole (7) in the end (3) for restricting movement of the arm until the other plunger is depressed.
    Type: Grant
    Filed: November 7, 1977
    Date of Patent: April 3, 1979
    Inventor: Richard T. Shpall