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发明名称
TOOLS FOR LEARNING NUMBER CONCEPT
摘要
申请公布号
KR20110103154(A)
申请公布日期
2011.09.20
申请号
KR20100022349
申请日期
2010.03.12
申请人
SONG, JONG SEOK;JOUNG, SEO YEON
发明人
SONG, JONG SEOK;JOUNG, SEO YEON
分类号
G09B23/02;G09B1/04
主分类号
G09B23/02
代理机构
代理人
主权项
地址
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