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发明名称
Ball-positioning game
摘要
申请公布号
US2788974(A)
申请公布日期
1957.04.16
申请号
US19530389351
申请日期
1953.10.30
申请人
PICK ERNEST A
发明人
PICK ERNEST A.
分类号
A63F3/00;A63F7/00
主分类号
A63F3/00
代理机构
代理人
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地址
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