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发明名称
LEARNING PLAY STRUCTURE FOR DEVELOPMENT OF INTELLIGENCE
摘要
申请公布号
KR200164552(Y1)
申请公布日期
2000.02.15
申请号
KR19990013861U
申请日期
1999.07.14
申请人
YOO, SUNG JIN;YOO, KEUN WOO;YOO, KEUN TAK
发明人
YOO, SUNG JIN;YOO, KEUN TAK;YOO, KEUN WOO
分类号
G09B1/04;(IPC1-7):G09B1/04
主分类号
G09B1/04
代理机构
代理人
主权项
地址
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