Improvements relating to fault-indicating apparatus,申请号GB19510004716-传众专利搜索

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发明名称	Improvements relating to fault-indicating apparatus
摘要
申请公布号	GB705390(A)	申请公布日期	1954.03.10
申请号	GB19510004716	申请日期	1951.02.27
申请人	FERRANTI LIMITED	发明人	WELBY BRIAN GUY
分类号	H04L17/20	主分类号	H04L17/20
代理机构		代理人
主权项
地址

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