Patents by Inventor Harry L. Stafford

Harry L. Stafford 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).

  • Baseball strike zone training aid
    Patent number: 8905870
    Abstract: A portable baseball practice device for training hitting and pitching which comprises a pair of opposing upright posts that support a centrally located strike zone that is formed by interconnecting horizontal and vertical cords. The cords create a strike zone for the pitcher to target to and the hitter to practice hitting.
    Type: Grant
    Filed: December 14, 2012
    Date of Patent: December 9, 2014
    Inventor: Harry L. Stafford