Patents by Inventor Geoffrey H. Stelling

Geoffrey H. Stelling 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).

  • Banjo resonator flange
    Patent number: D245725
    Type: Grant
    Filed: December 29, 1975
    Date of Patent: September 6, 1977
    Inventor: Geoffrey H. Stelling
  • Banjo
    Patent number: D247926
    Type: Grant
    Filed: March 22, 1976
    Date of Patent: May 16, 1978
    Inventor: Geoffrey H. Stelling
  • Banjo
    Patent number: D248992
    Type: Grant
    Filed: February 24, 1976
    Date of Patent: August 15, 1978
    Inventor: Geoffrey H. Stelling
  • Banjo resonator flange
    Patent number: D254312
    Type: Grant
    Filed: April 27, 1977
    Date of Patent: February 26, 1980
    Inventor: Geoffrey H. Stelling