Improvements in railway rails,申请号GB19470020688-传众专利搜索

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发明名称	Improvements in railway rails
摘要
申请公布号	GB650732(A)	申请公布日期	1951.02.28
申请号	GB19470020688	申请日期	1947.07.30
申请人	GEORGE RANDOLPH BURKHARDT	发明人
分类号	E01B5/02	主分类号	E01B5/02
代理机构		代理人
主权项
地址

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