Pipe-laying method,申请号US19540414758-传众专利搜索

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发明名称	Pipe-laying method
摘要
申请公布号	US2830548(A)	申请公布日期	1958.04.15
申请号	US19540414758	申请日期	1954.03.08
申请人	LEON MCELVANY JAMES	发明人	MCELVANY JAMES LEON
分类号	E02B11/02;E02F5/10	主分类号	E02B11/02
代理机构		代理人
主权项
地址

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