Patents by Inventor James J. Doane

James J. Doane 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 club swing training device
    Patent number: 4819944
    Abstract: A golf exercise device has a shaft with a grip at one end and a weight in the other, and a second lower grip parallel to the first, attached to the shaft between the first grip and the weight, offset from the first grip. By swinging the invention in a swing similar to that of a golfer, the correct muscle memory is built up to enable the golfer to swing a golf club in a natural and correct manner.
    Type: Grant
    Filed: July 8, 1988
    Date of Patent: April 11, 1989
    Inventor: James J. Doane