Patents by Inventor Karen R. Gruters

Karen R. Gruters 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).

  • Patent number: D368983
    Type: Grant
    Filed: August 29, 1994
    Date of Patent: April 16, 1996
    Inventors: Robert P. Gruters, Karen R. Gruters
  • Patent number: D374973
    Type: Grant
    Filed: October 26, 1995
    Date of Patent: October 29, 1996
    Inventors: Robert P. Gruters, Karen R. Gruters
  • Patent number: D388588
    Type: Grant
    Filed: March 27, 1996
    Date of Patent: January 6, 1998
    Inventors: Robert P. Gruters, Karen R. Gruters