发明名称 Method of providing free games on a slot machine device
摘要 The present invention includes a variety of methods to provide free games on a slot machine device until the appearance of two or more predetermined symbol combinations in the symbol matrix. A preferred embodiment, Capture Spins, provides free games until three, winning Capture symbol combinations appear in the symbol matrix.
申请公布号 US7749072(B1) 申请公布日期 2010.07.06
申请号 US20050252641 申请日期 2005.10.18
申请人 PTT LLC 发明人 SINGER ANTHONY MARK;MARKS DANIEL MORDECAI;MARKS HOWARD MITCHELL
分类号 A63F13/00 主分类号 A63F13/00
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