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经营范围
发明名称
PAY-PER-VIEW PROGRAM ACCESS CONTROL SYSTEM
摘要
申请公布号
KR20010024168(A)
申请公布日期
2001.03.26
申请号
KR1020007002937
申请日期
2000.03.20
申请人
发明人
分类号
H04N7/16
主分类号
H04N7/16
代理机构
代理人
主权项
地址
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