Patents by Inventor Craig C. T. Marshall

Craig C. T. Marshall 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: 5474300
    Abstract: A putter is disclosed for use in training a golfer in a style of putting in which a crossrod at the upper end of the club shaft is provided with a sleeve supported at each end by ball bearings on a reduced diameter portion thereof extending from the shaft toward the golfer while the golfer addressed a ball. The golfer maintains a firm grip on the sleeve with one hand during the backswing and the ensuing pendulum-like stroke while using the other hand to grip a portion of the crossrod that extends out away from the golfer in order to raise the club head to a desired height during the backswing, after which that portion is released or held with a light grip should the golfer want to add more power for a longer and/or uphill putt. The golfer may thus maintain his body steady during the putting stroke for greater consistency in putting on the green in the course of play.
    Type: Grant
    Filed: September 27, 1994
    Date of Patent: December 12, 1995
    Inventors: Patrick A. Scalise, Craig C. T. Marshall