Patents by Inventor Kenneth C. Guthrie

Kenneth C. Guthrie 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).

  • Dental pontic form
    Patent number: D331283
    Type: Grant
    Filed: September 26, 1990
    Date of Patent: November 24, 1992
    Inventor: Kenneth C. Guthrie
  • Dental pontic form
    Patent number: D331284
    Type: Grant
    Filed: September 26, 1990
    Date of Patent: November 24, 1992
    Inventor: Kenneth C. Guthrie
  • Dental pontic form
    Patent number: D331285
    Type: Grant
    Filed: September 26, 1990
    Date of Patent: November 24, 1992
    Inventor: Kenneth C. Guthrie
  • Dental pontic form
    Patent number: D338529
    Type: Grant
    Filed: September 26, 1990
    Date of Patent: August 17, 1993
    Inventor: Kenneth C. Guthrie