Patents by Inventor Alan R. Birch

Alan R. Birch 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).

  • Door plate
    Patent number: D326996
    Type: Grant
    Filed: September 4, 1990
    Date of Patent: June 16, 1992
    Assignee: Broadway Industries, Inc.
    Inventor: Alan R. Birch
  • Door lever
    Patent number: D331004
    Type: Grant
    Filed: July 16, 1990
    Date of Patent: November 17, 1992
    Assignee: Broadway Industries, Inc.
    Inventor: Alan R. Birch
  • Door handle unit
    Patent number: D339280
    Type: Grant
    Filed: August 12, 1991
    Date of Patent: September 14, 1993
    Assignee: Broadway Industries, Inc.
    Inventors: William B. Bray, Alan R. Birch
  • Lever handle
    Patent number: D346947
    Type: Grant
    Filed: May 14, 1993
    Date of Patent: May 17, 1994
    Assignee: Broadway Industries, Inc.
    Inventor: Alan R. Birch