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发明名称
Multi-media file License control system
摘要
申请公布号
KR20090000019(U)
申请公布日期
2009.01.07
申请号
KR20070010509U
申请日期
2007.06.26
申请人
发明人
分类号
G06F21/10;G06F21/62
主分类号
G06F21/10
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代理人
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