IMPROVEMENTS IN RAILWAY SIGNALLING SYSTEM,申请号GB19890026060-传众专利搜索

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发明名称	IMPROVEMENTS IN RAILWAY SIGNALLING SYSTEM
摘要
申请公布号	GB8926060(D0)	申请公布日期	1990.01.10
申请号	GB19890026060	申请日期	1989.11.17
申请人	BRITISH RAILWAYS BOARD	发明人
分类号	B61L1/18;B61L3/12;B61L25/02	主分类号	B61L1/18
代理机构		代理人
主权项
地址

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