Improvements in or relating to electric signalling systems,申请号GB19430002131-传众专利搜索

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发明名称	Improvements in or relating to electric signalling systems
摘要
申请公布号	GB563434(A)	申请公布日期	1944.08.15
申请号	GB19430002131	申请日期	1943.02.09
申请人	STANDARD TELEPHONES AND CABLES LIMITED;ANDREW BROWN;THOMAS ALFRED MARSHALL	发明人
分类号	B61L25/04	主分类号	B61L25/04
代理机构		代理人
主权项
地址

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