Improvements in train control apparatus,申请号GB19300035026-传众专利搜索

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发明名称	Improvements in train control apparatus
摘要
申请公布号	GB369919(A)	申请公布日期	1932.03.21
申请号	GB19300035026	申请日期	1930.11.20
申请人	HARRY WISE RICHARDS	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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