发明名称 Scratch-off lottery game with dual transparent layers
摘要 A scratch-off lottery game including a substrate having at least one area having printed indicia thereon, the printed indicia being covered by at least one clear, transparent layer which can be removed by scratching, and at least one layer on said clear transparent layer which is colored, transparent and made of a non-scratch-off material, the colored transparent layer being affixed to the clear transparent layer in a manner in which removing the clear transparent layer by scratching results in removal of the colored transparent layer.
申请公布号 US6076860(A) 申请公布日期 2000.06.20
申请号 US19980208228 申请日期 1998.12.09
申请人 OBERTHUR GAMING TECHNOLOGIES INC 发明人 HOLMAN, STEPHEN JOHN;GOUGEON, FRANCOIS
分类号 A63F3/06;(IPC1-7):B42D15/00 主分类号 A63F3/06
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