Patents by Inventor Robert A. Birmingham

Robert A. Birmingham 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).

  • Handrail and method of making the same
    Patent number: 4256287
    Abstract: A handrail has a hollow core that is fabricated from joined together segments of relatively inexpensive material. A laminating material adheres to and covers the core, providing an attractive, durable gripping surface for the handrail.
    Type: Grant
    Filed: February 26, 1979
    Date of Patent: March 17, 1981
    Assignee: Owen Lumber & Millwork, Inc.
    Inventor: Robert A. Birmingham
  • Diverter valve
    Patent number: D466189
    Type: Grant
    Filed: November 15, 2001
    Date of Patent: November 26, 2002
    Assignee: Masco Corporation of Indiana
    Inventors: Gerald J. McNerney, Jeffrey W. McCormack, Rafael Victor Velazco, Mauro Pini, William Nolan, Gerald Robert Birmingham