Patents by Inventor David N. Bradley

David N. Bradley 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: 3972532
    Abstract: This invention comprises a Putting Practice Device including a support having a simulated golf ball mounted for limited movement thereon between operative and operated positions. Right and left putter contactors are mounted on said support on opposite sides of the ball, the contactors being equally spaced from the ball and being spaced apart a distance less than the length of the putting face of a conventional golf putter. Right and left visual signaling lights are mounted on the support to be viewed from above. Electrical elements on the support includes a circuit connected so that a putter stroking the ball from operative position toward operated position and also striking a contactor will cause the associated signaling light to be activated.
    Type: Grant
    Filed: December 3, 1975
    Date of Patent: August 3, 1976
    Inventor: David N. Bradley