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发明名称
Study Management System For On-line Education And Study Management Method Thereof
摘要
申请公布号
KR100792633(B1)
申请公布日期
2008.01.09
申请号
KR20060053111
申请日期
2006.06.13
申请人
发明人
分类号
G06Q50/20;G06F17/30
主分类号
G06Q50/20
代理机构
代理人
主权项
地址
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