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经营范围
发明名称
CARD PUZZLE
摘要
A group of cards each having a through opening and a characteristic marking proximate to the through opening, adapted for arrangement in stacked relation to locate the markings of different cards in complementary relation with each other.
申请公布号
US3645534(A)
申请公布日期
1972.02.29
申请号
USD3645534
申请日期
1969.11.12
申请人
JOSEPH A. WEISBECKER
发明人
JOSEPH A. WEISBECKER
分类号
A63F1/02;A63F9/06;A63F9/12;(IPC1-7):A63F9/08
主分类号
A63F1/02
代理机构
代理人
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