Improvements relating to electric signalling systems,申请号GB19440006986-传众专利搜索

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发明名称	Improvements relating to electric signalling systems
摘要
申请公布号	GB581021(A)	申请公布日期	1946.09.27
申请号	GB19440006986	申请日期	1944.04.15
申请人	SIEMENS BROTHERS & CO., LIMITED;BERNARD ANTHONY HENSLER	发明人
分类号	H04M19/02	主分类号	H04M19/02
代理机构		代理人
主权项
地址

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