ROTARY DRILLING DRILL STRING STABILIZER-CUTTINGS GRINDER,申请号GB19810033739-传众专利搜索

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发明名称	ROTARY DRILLING DRILL STRING STABILIZER-CUTTINGS GRINDER
摘要
申请公布号	GB2088440(B)	申请公布日期	1984.10.17
申请号	GB19810033739	申请日期	1981.11.09
申请人	MOBIL OIL CORP	发明人
分类号	E21B4/00;E21B7/04;E21B10/04;E21B17/10;E21B21/00;E21B21/10;E21B41/00;(IPC1-7):E21B21/00	主分类号	E21B4/00
代理机构		代理人
主权项
地址

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