UNDERJORDISK MOTOR TIL BORING AF BOREHULLER,申请号DK19830003845-传众专利搜索

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发明名称	UNDERJORDISK MOTOR TIL BORING AF BOREHULLER
摘要
申请公布号	DK157212(C)	申请公布日期	1990.04.16
申请号	DK19830003845	申请日期	1983.08.23
申请人	SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V.	发明人	KAMP, ANTHONY WILLEM;FEENSTRA, ROBIJN
分类号	E21B4/02;E21B4/20;E21B7/06;(IPC1-7):E21B7/06	主分类号	E21B4/02
代理机构		代理人
主权项
地址

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