Patents by Inventor Lee R. Hatt

Lee R. Hatt 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).

  • Patent number: 4913444
    Abstract: A reversible dart board has a frame with a raised periphery defining a target receiving space. The target has an obverse face divided into equal areas with each area marked with a different number from a first sequence of numbers. The target has a reverse face divided into equal areas with each area marked with a different number from a second sequence of numbers. The frame has a back portion with a cut-out area which one can use to push out the target. The raised periphery of the frame is preferably formed by folding extending areas of the back portion.
    Type: Grant
    Filed: October 3, 1988
    Date of Patent: April 3, 1990
    Inventor: Lee R. Hatt