Patents by Inventor Ross A. Duncan

Ross A. Duncan 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: 5688187
    Abstract: New golf irons have the shaft attached into the club head directly through the club face, which allows the club face to be generally symmetrical in order to ease alignment of the club for hitting, to reduce moments of inertia which could turn the club face to spoil a hit, and to enlarge the area for best hitting.
    Type: Grant
    Filed: January 10, 1997
    Date of Patent: November 18, 1997
    Inventor: Ross A. Duncan