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Class Information
Number: 273/157A
Name: Amusement devices: games > Puzzles > Take-aparts and put-togethers > Geometrical figures, pictures, and maps > Transparent overlay

Patents under this class:

Patent Number Title Of Patent Date Issued
8191895 Color by symbol picture puzzle kit Jun. 5, 2012
8181961 In-tube puzzle May. 22, 2012
8020870 Pattern recognition and duplication process and game Sep. 20, 2011
7520508 Board game apparatus for teaching electoral college, historical and geographical concepts Apr. 21, 2009
6692001 Multi-layered decorative puzzle apparatus Feb. 17, 2004
6663732 Process for making an individualized puzzle collage Dec. 16, 2003
6634644 Concealment-type word puzzle/game Oct. 21, 2003
6398643 Promotional gaming device Jun. 4, 2002
6361045 Puzzles with pressure-sensitive stick-on pieces Mar. 26, 2002
6336631 Two-sided puzzle Jan. 8, 2002
6186504 Color-change puzzle game Feb. 13, 2001
5823532 Window puzzle Oct. 20, 1998
5769418 Transparent puzzle having at least two image planes Jun. 23, 1998
5715316 Optical image encryption and decryption processes Feb. 3, 1998
5636840 Occult device Jun. 10, 1997
5577728 Jigsaw puzzle Nov. 26, 1996
5299805 Multilayer puzzle Apr. 5, 1994
5217226 Three-dimensional model atmosphere puzzle Jun. 8, 1993
5156698 Integral packaging for puzzle postcard and other products and method of making Oct. 20, 1992
5037110 Geometric card game Aug. 6, 1991
4884811 Puzzle apparatus Dec. 5, 1989
4815742 Multi-layered puzzle Mar. 28, 1989
4799680 Transparent puzzle Jan. 24, 1989
4781381 Stacked sheets with code bits forming composite image Nov. 1, 1988
4605231 Light transmission puzzle game Aug. 12, 1986
4491326 Puzzle having polarized stackable components Jan. 1, 1985
4430824 Composite-picture forming play kit Feb. 14, 1984
4402510 Puzzle toy Sep. 6, 1983
4362301 Multiple image visual puzzle and method Dec. 7, 1982
4257609 Games and puzzles Mar. 24, 1981

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