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发明名称
SYSTEM FOR PROVIDING CONFERANCE CALL SERVICE AND DEVICE THEREFOR
摘要
申请公布号
KR100956732(B1)
申请公布日期
2010.05.10
申请号
KR20070092064
申请日期
2007.09.11
申请人
发明人
分类号
H04M3/56;H04M3/58
主分类号
H04M3/56
代理机构
代理人
主权项
地址
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