Rail joint shim,申请号US19380222657-传众专利搜索

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发明名称	Rail joint shim
摘要
申请公布号	US2183272(A)	申请公布日期	1939.12.12
申请号	US19380222657	申请日期	1938.08.02
申请人	THE AMERICAN FORK & HOE COMPANY	发明人	WONHAM FRED S.
分类号	E01B11/02	主分类号	E01B11/02
代理机构		代理人
主权项
地址

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