Improvements in or relating to circuit arrangements for indicating single lines out of groups of lines having a common designation number, for example p.b.x. groups, in telecommunication switching systems,申请号GB19570022690-传众专利搜索

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发明名称	Improvements in or relating to circuit arrangements for indicating single lines out of groups of lines having a common designation number, for example p.b.x. groups, in telecommunication switching systems
摘要
申请公布号	GB822104(A)	申请公布日期	1959.10.21
申请号	GB19570022690	申请日期	1957.07.17
申请人	SIEMENS & HALSKE AKTIENGESELLSCHAFT	发明人
分类号	H04Q3/42	主分类号	H04Q3/42
代理机构		代理人
主权项
地址

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