Noise-reducing railway rail,申请号GB19900018466-传众专利搜索

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发明名称	Noise-reducing railway rail
摘要
申请公布号	GB2235941(A)	申请公布日期	1991.03.20
申请号	GB19900018466	申请日期	1990.08.22
申请人	* BRITISH RAILWAYS BOARD	发明人	COLIN GRAHAM * STANWORTH
分类号	E01B5/02;E01B19/00	主分类号	E01B5/02
代理机构		代理人
主权项
地址

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