Patents by Inventor Cecil L. Wilkerson

Cecil L. Wilkerson 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).

  • Batting practice machine
    Patent number: 5018729
    Abstract: A batting practice machine comprising a generally flat horizontal base; a vertical frame; an adjustable, rotatable, outward extending arm; a line secured to the arm; a ball secured to the line; and a motor and drive mechanism for rotating the arm in a generally horizontal circle, thereby moving the ball along a horizontal circular path for repeated presentation to a batter.
    Type: Grant
    Filed: September 5, 1989
    Date of Patent: May 28, 1991
    Inventor: Cecil L. Wilkerson