Improvements in or relating to train control systems,申请号GB19360003893-传众专利搜索

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发明名称	Improvements in or relating to train control systems
摘要
申请公布号	GB477319(A)	申请公布日期	1937.12.29
申请号	GB19360003893	申请日期	1937.01.14
申请人	ALFRED ERNEST HUDD	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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