Conference circuits and methods of operating them.,申请号EP19860307160-传众专利搜索

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发明名称	Conference circuits and methods of operating them.
摘要
申请公布号	EP0218395(A2)	申请公布日期	1987.04.15
申请号	EP19860307160	申请日期	1986.09.17
申请人	NORTEL NETWORKS CORPORATION	发明人	ELLIS, JOHN GWILYM;TOWNSEND, BRUCE LEIGH;STRAWCZYNSKI, LEO
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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