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发明名称
WIRELESS EDUCATION SYSTEM
摘要
申请公布号
KR100200527(B1)
申请公布日期
1999.06.15
申请号
KR19960017781
申请日期
1996.05.23
申请人
YOUSUNG CNC. CO.,LTD.
发明人
HAN, HYUN
分类号
G11B20/10;(IPC1-7):G11B20/10
主分类号
G11B20/10
代理机构
代理人
主权项
地址
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