Improvements relating to arrangements for automatically tracing calls backwards in automatic telephone systems,申请号GB19650014411-传众专利搜索

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发明名称	Improvements relating to arrangements for automatically tracing calls backwards in automatic telephone systems
摘要
申请公布号	GB1078778(A)	申请公布日期	1967.08.09
申请号	GB19650014411	申请日期	1965.04.05
申请人	ASSOCIATED ELECTRICAL INDUSTRIES LIMITED	发明人	DRAKE BERNARD;PEWTER DAVID ROBIN IAN;GIBBS TERRANCE WALTER
分类号	H04Q3/00	主分类号	H04Q3/00
代理机构		代理人
主权项
地址

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