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1999May 28, 2002Stephen Tobin WalkerMethod of playing a knowledge based wagering gameUS6397189May 12, 1998May 28, 2002Arachnid, Inc.Computer jukebox and jukebox networkUS6435879 *May 4, 1999Aug 20, 2002Andreas UnsickerMethod and device for checking the correctness of answers to quiz questions over the media and in events, especially television and radioUS6454266Aug 13, 2001Sep 24, 2002Shuffle Mast
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