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发明名称
INTERACTIVE MULTIMEDIA VIRTUAL CLASSES REQUIRING SMALL ONLINE NETWORK BANDWIDTH
摘要
申请公布号
KR100617336(B1)
申请公布日期
2006.08.31
申请号
KR20010040005
申请日期
2001.07.05
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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