发明名称 |
Game ticket confusion patterns. |
摘要 |
<p>Security of game cards such as instant lottery tickets can be improved by locating a confusion pattern (32) below a primer layer (14) on a game cards substrate (12) and by locating another confusion pattern (34) on a release coat (24) above a game card play indica (20). Game card security can be further enhanced by using confusion pattern ink that bleeds through the game card in response to the application of various solvents.</p> |
申请公布号 |
EP0568814(A2) |
申请公布日期 |
1993.11.10 |
申请号 |
EP19930105312 |
申请日期 |
1993.03.31 |
申请人 |
SCIENTIFIC GAMES INC. |
发明人 |
BEHM, WILLIAM FREDERICK;LITMAN, STANLEY;WALTON, BRADLEY WALTER |
分类号 |
A63F3/06;(IPC1-7):A63F3/06 |
主分类号 |
A63F3/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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