Patents by Inventor Kurt Donaldson

Kurt Donaldson 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).

  • PORTABLE GOLGF CLUB GROOVE SHARPENING TOOL
    Publication number: 20100037412
    Abstract: A portable golf club groove sharpening tool having a sharpener and a groove smoothening material made of metal and a wiping portion. The sharpener material is tapered to fit in a typical golf club groove and may be adjustable to fit variations in club groove distances. In one motion the tool of the present invention sharpens the grooves and in a reversal of said motion smoothens the groove.
    Type: Application
    Filed: August 14, 2008
    Publication date: February 18, 2010
    Inventor: KURT DONALDSON
  • Four-sided golf club groove sharpening tool
    Patent number: D613806
    Type: Grant
    Filed: March 12, 2009
    Date of Patent: April 13, 2010
    Inventor: Kurt Donaldson