Improvements relating to block working for railway signalling systems,申请号GB19570027740-传众专利搜索

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发明名称	Improvements relating to block working for railway signalling systems
摘要
申请公布号	GB845228(A)	申请公布日期	1960.08.17
申请号	GB19570027740	申请日期	1957.09.03
申请人	WESTINGHOUSE BRAKE & SIGNAL COMPANY LIMITED;PETER TILLOTSON	发明人
分类号	B61L23/12	主分类号	B61L23/12
代理机构		代理人
主权项
地址

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