Patents by Inventor Robert J. Livingstone

Robert J. Livingstone 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).

  • Floor mat
    Patent number: D310000
    Type: Grant
    Filed: January 27, 1987
    Date of Patent: August 21, 1990
    Inventors: Robert J. Livingstone, Daniel K. Griffin
  • Floor mat
    Patent number: D350253
    Type: Grant
    Filed: June 7, 1991
    Date of Patent: September 6, 1994
    Inventors: Robert J. Livingstone, Daniel K. Griffin