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经营范围
发明名称
Interactive television transmission system
摘要
申请公布号
KR100637006(B1)
申请公布日期
2007.03.02
申请号
KR19980709653
申请日期
1998.11.28
申请人
发明人
分类号
H04N7/087
主分类号
H04N7/087
代理机构
代理人
主权项
地址
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