Railway rail anchor,申请号US19300454495-传众专利搜索

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发明名称	Railway rail anchor
摘要
申请公布号	US1804510(A)	申请公布日期	1931.05.12
申请号	US19300454495	申请日期	1930.05.21
申请人	THEODORE F. VON DORN	发明人	NORWOOD HARRY G.
分类号	E01B13/02	主分类号	E01B13/02
代理机构		代理人
主权项
地址

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