A METHOD FOR DRILLING WITH CASING,申请号CA20012661956-传众专利搜索

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发明名称	A METHOD FOR DRILLING WITH CASING
摘要
申请公布号	CA2661956(A1)	申请公布日期	2001.12.13
申请号	CA20012661956	申请日期	2001.05.14
申请人	TESCO CORPORATION	发明人	ANGMAN, PER G.
分类号	E21B7/20;E21B10/64;E21B10/66;E21B23/08	主分类号	E21B7/20
代理机构		代理人
主权项
地址

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