Rail wearing surface,申请号US19370121544-传众专利搜索

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发明名称	Rail wearing surface
摘要
申请公布号	US2105838(A)	申请公布日期	1938.01.18
申请号	US19370121544	申请日期	1937.01.21
申请人	GENERAL ALLOYS COMPANY	发明人	MCCORMICK GEORGE C.
分类号	F27D3/02	主分类号	F27D3/02
代理机构		代理人
主权项
地址

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