Hänvisningar finns i följande patent|
| US4017081 | 29 dec 1975 | 12 apr 1977 | | Electronic random selection device and amusement application therefor | | US4275442 | 2 jul 1979 | 23 jun 1981 | | Electronic tic-tac-toe game | | US4303246 | 15 apr 1980 | 1 dec 1981 | | Table game | | US4395835 | 16 mar 1981 | 2 aug 1983 | | Liquid rainbow | | US4402510 | 12 feb 1982 | 6 sep 1983 | Nintendo Co., Ltd. | Puzzle toy | | US4521024 | 27 jan 1984 | 4 jun 1985 | Seven Towns Limited | Apparatus for playing a game | | US4605231 | 19 sep 1984 | 12 aug 1986 | | Light transmission puzzle game | | US4620709 | 13 apr 1984 | 4 nov 1986 | Game Concepts, Inc. | Board game and method | | US5839960 | 14 aug 1996 | 24 nov 1998 | | Table for playing a game of chance | | US6161832 | 29 jan 1999 | 19 dec 2000 | Irwin Toy Limited | Stacking block game | | US6186504 | 9 jul 1999 | 13 feb 2001 | John Maxim | Color-change puzzle game | | US7341252 | 6 jun 2005 | 11 mar 2008 | | Board game | | USD365288 | 30 mar 1994 | 19 dec 1995 | | Illuminated game board |
|