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发明名称
a study book for a preschool education to type looking to passing a hole
摘要
申请公布号
KR200380506(Y1)
申请公布日期
2005.03.30
申请号
KR20050000033U
申请日期
2005.01.03
申请人
发明人
分类号
G09B11/10;G09B19/00;(IPC1-7):G09B11/10
主分类号
G09B11/10
代理机构
代理人
主权项
地址
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