A network server provides control functions for gambling devices of the type which provide intermittent monetary payments to players at a point-of-play. The point-of-play includes an interactive display device for displaying messages to the player and for receiving player responses which are then transmitted...http://www.google.fr/patents/US6390917?utm_source=gb-gplus-shareBrevet US6390917 - Slot machine advertising/sales system and method
