Fremgangsmåte for boring, og foringsrörsko,申请号NO19980000446-传众专利搜索

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发明名称	Fremgangsmåte for boring, og foringsrörsko
摘要
申请公布号	NO980446(A)	申请公布日期	1998.03.18
申请号	NO19980000446	申请日期	1998.02.02
申请人	SVENSKA BORR AB	发明人	EDMAN, OESTEN
分类号	E21B7/20;E21B17/08;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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