TELEPHONE CONFERENCE BRIDGE CIRCUIT ARRANGEMENTS,申请号GB19840021850-传众专利搜索

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发明名称	TELEPHONE CONFERENCE BRIDGE CIRCUIT ARRANGEMENTS
摘要
申请公布号	GB2146506(A)	申请公布日期	1985.04.17
申请号	GB19840021850	申请日期	1984.08.29
申请人	THE * PLESSEY COMPANY PLC	发明人	RUSSELL * WINSOR
分类号	H04M3/56;(IPC1-7):H04M3/56	主分类号	H04M3/56
代理机构		代理人
主权项
地址

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