Patents by Inventor Martin K. Liverance

Martin K. Liverance 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).

  • Headlamp assembly
    Patent number: 4926301
    Abstract: A vehicle headlamp in which the rear of the reflector has fastened thereto a retainer assembly that receives a replaceable light bulb and includes a shield for blocking stray light rays emanating from the light bulb.
    Type: Grant
    Filed: September 18, 1989
    Date of Patent: May 15, 1990
    Assignee: General Motors Corporation
    Inventors: Martin K. Liverance, David R. McMahan, Bartly A. Haydu
  • Headlamp assembly
    Patent number: 4882660
    Abstract: A vehicle headlamp in which the rear of the reflector has fastened thereto a retainer assembly that receives a replaceable light bulb and includes a shield for blocking stray light rays emanating from the light bulb.
    Type: Grant
    Filed: November 28, 1988
    Date of Patent: November 21, 1989
    Assignee: General Motors Corporation
    Inventors: Martin K. Liverance, David R. McMahan, Bartly A. Haydu
  • Headlamp assembly
    Patent number: 4747029
    Abstract: A vehicle headlamp in which the rear of the reflector has fastened thereto a retainer assembly that receives a replaceable light bulb and includes a shield for blocking stray light rays emanating from the light bulb.
    Type: Grant
    Filed: November 13, 1986
    Date of Patent: May 24, 1988
    Assignee: General Motors Corporation
    Inventors: Martin K. Liverance, David R. McMahan, Bartly A. Haydu