Patents by Inventor Lawrence R. Martin

Lawrence R. Martin 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).

  • Angle guide instrument
    Patent number: 5809659
    Abstract: An angle guide instrument having particular utility for handrail installation which includes a body portion having an outer arcuate edge and first and second arms which are pivotable with respect to the body and are used in conjunction with levels mounted to the body for determining angles for purposes of cutting sections of handrail. In a preferred embodiment the arms include extensions which are profiled so as to be cooperatively seated with a section of handrail.
    Type: Grant
    Filed: November 4, 1996
    Date of Patent: September 22, 1998
    Inventor: Lawrence R. Martin
  • Life preserver
    Patent number: D309491
    Type: Grant
    Filed: March 31, 1988
    Date of Patent: July 24, 1990
    Inventor: Lawrence R. Martin