Improvements in and relating to railway rail joints,申请号GB19460032547-传众专利搜索

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发明名称	Improvements in and relating to railway rail joints
摘要
申请公布号	GB621889(A)	申请公布日期	1949.04.21
申请号	GB19460032547	申请日期	1946.11.01
申请人	GILBERT NELSON REEVES	发明人
分类号	E01B11/04	主分类号	E01B11/04
代理机构		代理人
主权项
地址

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