Patents by Inventor Lawrence D. Knapp

Lawrence D. Knapp 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).

  • Universal joint
    Patent number: 5409332
    Abstract: A universal joint including a ball and a ball socket. The ball includes a drive socket for connection to a driving or driver shaft. The drive socket is located substantially totally within the ball socket.
    Type: Grant
    Filed: October 2, 1991
    Date of Patent: April 25, 1995
    Inventors: Bertin R. Chabot, Jr., Lawrence D. Knapp