Hydraulic pilot reamer for directional drilling,申请号US19510249082-传众专利搜索

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发明名称	Hydraulic pilot reamer for directional drilling
摘要
申请公布号	US2685431(A)	申请公布日期	1954.08.03
申请号	US19510249082	申请日期	1951.10.01
申请人	EASTMAN OIL WELL SURVEY COMPANY	发明人	JAMES WILLIAM G.
分类号	E21B7/06;E21B7/08	主分类号	E21B7/06
代理机构		代理人
主权项
地址

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