Patents by Inventor Richard Shum

Richard Shum 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).

  • Bowling practice device
    Patent number: 7261638
    Abstract: A bowling practice device for regularizing and perfecting bowling technique. An aerodynamically designed hollow body includes an outer wall and a cylindrical inner wall. The opposed ends of the outer wall taper to meet the cylindrical inner wall. The outer wall preferably comprises a plurality of foam panels, one of which includes at least two finger holes suitable for personalization to the hand of the bowler.
    Type: Grant
    Filed: May 24, 2005
    Date of Patent: August 28, 2007
    Inventors: Randy R. Davis, Richard Shum