Patents by Inventor Dennis E. Mitchell

Dennis E. Mitchell 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: 5368301
    Abstract: A double sided picture or jigsaw type puzzle includes separate puzzles on both of the opposite sides of the puzzle sheet. The first side may include one or more separate individual picture puzzles, while the second side may also comprise one or more puzzles. Disassembly may be required of the assembled puzzle(s) of the first side, in order to assemble the puzzle(s) of the second side from the separate and individual puzzle pieces. Alternatively, the second side puzzle(s) may be assembled by joining the inverted and completed first side puzzle(s), depending upon the printing of the completed puzzle pictures. The individual puzzle pieces provide a myriad of different assemblies, due to the congruent nature of all, or almost all, of the puzzle pieces.
    Type: Grant
    Filed: January 26, 1994
    Date of Patent: November 29, 1994
    Inventor: Dennis E. Mitchell
  • Patent number: D353415
    Type: Grant
    Filed: April 20, 1993
    Date of Patent: December 13, 1994
    Inventor: Dennis E. Mitchell