Borekrone for boring under kjöring av fôringsrör,申请号NO20020002831-传众专利搜索

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发明名称	Borekrone for boring under kjöring av fôringsrör
摘要
申请公布号	NO20022831(A)	申请公布日期	2002.06.14
申请号	NO20020002831	申请日期	2002.06.14
申请人	WEATHERFORD/LAMB INC	发明人	WARDLEY, MICHAEL
分类号	E21B7/20;E21B10/42;E21B10/43;E21B10/54;E21B17/14;(IPC1-7):E21B7/20	主分类号	E21B7/20
代理机构		代理人
主权项
地址

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