CONFERENCE BRIDGE SYSTEM,申请号GB19860019938-传众专利搜索

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发明名称	CONFERENCE BRIDGE SYSTEM
摘要
申请公布号	GB8619938(D0)	申请公布日期	1986.09.24
申请号	GB19860019938	申请日期	1986.08.15
申请人	PLESSEY CO PLC	发明人
分类号	H04M3/56	主分类号	H04M3/56
代理机构		代理人
主权项
地址

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