The present invention provides a method of operating a bingo game using a game server on a network, comprises (a) providing a plurality of unique game cards and enabling a plurality of players to each purchase at least one unique game card by using a remote game client computer, at least one purchased...http://www.google.de/patents/US6585590?utm_source=gb-gplus-sharePatent US6585590 - Method and system for operating a bingo game on the internet
