Patents by Inventor Robert E. Mason, IV

Robert E. Mason, IV 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).

  • Light table for teaching geometric principles
    Patent number: 5343369
    Abstract: A light table includes a housing extending in a horizontal direction having legs extending downwardly therefrom. The housing defines X- and Y-axes and has an X-Y grid pattern formed thereon and visible from above the housing. A lighting system is used to illuminate the grid pattern. A frame extends vertically upwards from the housing and defines a Z-axis having an X-Z grid pattern formed thereon. A second lighting system illuminates the grid pattern on the vertical frame.
    Type: Grant
    Filed: November 24, 1992
    Date of Patent: August 30, 1994
    Inventor: Robert E. Mason, IV