发明名称 Method and apparatus for awarding and redeeming prepaid telephone time
摘要 A slot card issued by a slot club, or a membership card in another incentive award program, that is also capable of being used as phone calling card is provided. Free calling time is credited to the member's card account in response to the playing of the slot machine or utilizing the respective service. After incentive points are awarded, the member may use the membership card as a prepaid phone calling card, whereby the member's account is debited for the cost of the call.
申请公布号 US6229879(B1) 申请公布日期 2001.05.08
申请号 US19980044883 申请日期 1998.03.20
申请人 WALKER DIGITAL, LLC 发明人 WALKER JAY S.;JORASCH JAMES A.
分类号 G07F17/32;(IPC1-7):H04M1/247 主分类号 G07F17/32
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