Improvements in magnetic devices for use in train control or railway signalling systems,申请号GB19340019164-传众专利搜索

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发明名称	Improvements in magnetic devices for use in train control or railway signalling systems
摘要
申请公布号	GB440435(A)	申请公布日期	1935.12.30
申请号	GB19340019164	申请日期	1934.06.28
申请人	HARRY HUGHES HARRISON	发明人
分类号	B61L3/12	主分类号	B61L3/12
代理机构		代理人
主权项
地址

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