Patents by Inventor Alex Semon

Alex Semon 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).

  • Table tennis return board
    Patent number: 4134585
    Abstract: A table tennis return board for single end table tennis play, consists of a curved three section panel. Each section is covered with a resilient material having, respectively a soft, intermediate or stiff reflective quality. The board may be provided with a plurality of hard reflective disks and a plurality of serrated spin-imparting squares.
    Type: Grant
    Filed: December 21, 1977
    Date of Patent: January 16, 1979
    Inventor: Alex Semon