Railroad spike with space compensating means,申请号US19530368722-传众专利搜索

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法人/股东/高管

发明名称	Railroad spike with space compensating means
摘要
申请公布号	US2777642(A)	申请公布日期	1957.01.15
申请号	US19530368722	申请日期	1953.07.17
申请人	LEE SPENCER	发明人	SPENCER LEE
分类号	E01B9/06	主分类号	E01B9/06
代理机构		代理人
主权项
地址

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