Two-piece rail anchor,申请号US19540457588-传众专利搜索

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发明名称	Two-piece rail anchor
摘要
申请公布号	US2815902(A)	申请公布日期	1957.12.10
申请号	US19540457588	申请日期	1954.09.22
申请人	POOR & COMPANY	发明人	GRANT JOHN L.
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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