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发明名称
A PLAY-IMPLEMENT FOR LEARNING KNOWLEDGE
摘要
申请公布号
WO2008143478(A9)
申请公布日期
2009.02.26
申请号
WO2008KR02883
申请日期
2008.05.23
申请人
SON, YONG KWAN
发明人
SON, YONG KWAN
分类号
G09B5/06;B03B5/32;G09B5/00
主分类号
G09B5/06
代理机构
代理人
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