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发明名称
Educational Tool for Children's Intelligence Improvement
摘要
申请公布号
KR200431679(Y1)
申请公布日期
2006.11.24
申请号
KR20060024175U
申请日期
2006.09.08
申请人
发明人
分类号
G09B1/16;G09B1/00
主分类号
G09B1/16
代理机构
代理人
主权项
地址
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