Patents by Inventor John P. O'Brien

John P. O'Brien 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).

  • Golf training device
    Patent number: 4073075
    Abstract: A gold training device wherein a wedge-shaped member is provided with one or more pins mounted on an upward extension thereof. The pins are adapted to fit into holes provided in the sole of a golfer's shoe for the purpose of attaching the device to the shoe. The golf training device is adapted to be secured to conventional golf shoes, street shoes, and sport shoes which are adapted to receive the sole-engaging pins.
    Type: Grant
    Filed: December 23, 1976
    Date of Patent: February 14, 1978
    Inventor: John P. O'Brien