Patents by Inventor Melford D. Clark

Melford D. Clark 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).

  • Puzzle
    Patent number: 4410180
    Abstract: A number of square pieces having matching corner patterns and are arranged in sets so that each set may be assembled with the preceding sets to form a square in which the patterns on all mutually adjacent sides of the pieces match.
    Type: Grant
    Filed: November 16, 1981
    Date of Patent: October 18, 1983
    Inventor: Melford D. Clark
  • Magnetic drop game
    Patent number: 4349201
    Abstract: A magnetic game includes a closed container having a transparent, multi-level dome which covers a base member having a plurality of upstanding pylons each having a ball receiving pocket in the top; a plurality of magnetic balls are loosely disposed within the container for movement by a hand-held permanent magnet from a plurality of magazine pockets surrounding the pylon area to a position on the dome over the pylons.
    Type: Grant
    Filed: September 8, 1981
    Date of Patent: September 14, 1982
    Inventor: Melford D. Clark