Circuit arrangement for testing switching circuits and/or lines with regard to their engaged condition, in tele-communication systems, particularly in telephone exchange systems,申请号GB19640047929-传众专利搜索

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发明名称	Circuit arrangement for testing switching circuits and/or lines with regard to their engaged condition, in tele-communication systems, particularly in telephone exchange systems
摘要
申请公布号	GB1078297(A)	申请公布日期	1967.08.09
申请号	GB19640047929	申请日期	1964.11.25
申请人	TELEFUNKEN PATENTVERWERTUNGSGESELLSCHAFT M.B.H.	发明人
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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