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发明名称
DISPOSITIF DE CONFERENCE POUR UN SYSTEME DE TELECOMMUNICATIONS
摘要
申请公布号
FR2407624(B1)
申请公布日期
1986.09.26
申请号
FR19780030874
申请日期
1978.10.31
申请人
WESTERN ELECTRIC CY INC
发明人
分类号
H04M1/02;H04M3/42;H04M3/56;H04Q3/54;(IPC1-7):H04M3/56
主分类号
H04M1/02
代理机构
代理人
主权项
地址
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