Improvements in or relating to telephone networks,申请号GB19610026898-传众专利搜索

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发明名称	Improvements in or relating to telephone networks
摘要
申请公布号	GB927338(A)	申请公布日期	1963.05.29
申请号	GB19610026898	申请日期	1961.07.25
申请人	SIEMENS & HALSKE AKTIENGESELLSCHAFT	发明人
分类号	H04Q1/442;H04Q3/00	主分类号	H04Q1/442
代理机构		代理人
主权项
地址

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