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发明名称
METHOD FOR STUDYING A CONVERSATION IN ENGLISH IN A MOBILE TERMINAL
摘要
申请公布号
KR100640382(B1)
申请公布日期
2006.10.31
申请号
KR19990030240
申请日期
1999.07.24
申请人
发明人
分类号
G09B5/02
主分类号
G09B5/02
代理机构
代理人
主权项
地址
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