Patents by Inventor Jon J. Kiefer

Jon J. Kiefer 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).

  • Basketball court layout device
    Patent number: 4937949
    Abstract: Templates for use in the laying out selected features of basketball court with relation to the location of the backboard including a flexible planar elongate sheet of material having a index to locate the backboard in relation to the template with slits provided within the template to outline aspects of a basketball court with relation to the index provided by the backboard and including the freethrow lane, freethrow circle freethrow line as well as other features of a basketball court such as the three point line, baseline, and out of bounds.
    Type: Grant
    Filed: December 29, 1988
    Date of Patent: July 3, 1990
    Inventor: Jon J. Kiefer