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发明名称
LANGUAGE LEARNING APPARATUS
摘要
申请公布号
KR100236428(B1)
申请公布日期
1999.12.15
申请号
KR19970058686
申请日期
1997.11.07
申请人
LEE, CHONG-SOO
发明人
LEE, CHONG-SOO
分类号
G09B5/04;(IPC1-7):G09B5/04
主分类号
G09B5/04
代理机构
代理人
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地址
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