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发明名称
Method and system for selectively providing free or paid Digital Mulimedia Service
摘要
申请公布号
KR100672531(B1)
申请公布日期
2007.01.24
申请号
KR20050038396
申请日期
2005.05.09
申请人
发明人
分类号
H04N21/647
主分类号
H04N21/647
代理机构
代理人
主权项
地址
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