DISPOSITIF DE CONFERENCE MULTIPLE POUR CENTRAL TELEPHONIQUE,申请号FR19800023462-传众专利搜索

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发明名称	DISPOSITIF DE CONFERENCE MULTIPLE POUR CENTRAL TELEPHONIQUE
摘要
申请公布号	FR2493647(B1)	申请公布日期	1987.10.02
申请号	FR19800023462	申请日期	1980.11.03
申请人	THOMSON CSF TELEPHONE	发明人	GERARD VERGNAUD
分类号	H04M3/56;(IPC1-7):H04M3/56;H04Q11/04	主分类号	H04M3/56
代理机构		代理人
主权项
地址

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