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发明名称
Device for intellectual exercise
摘要
A device for playing intellectual games includes a spherical body with predetermined inter-connecting grooves, wherein slidable pins are afixed. The exposed surface of the slidable pins are coded to carry any desired visual representations.
申请公布号
US5242166(A)
申请公布日期
1993.09.07
申请号
US19920903123
申请日期
1992.06.23
申请人
WONG, KAH F.
发明人
WONG, KAH F.
分类号
A63F9/08
主分类号
A63F9/08
代理机构
代理人
主权项
地址
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