DRILL STRING STABILISER,申请号GB19890015302-传众专利搜索

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发明名称	DRILL STRING STABILISER
摘要
申请公布号	GB8915302(D0)	申请公布日期	1989.08.23
申请号	GB19890015302	申请日期	1989.07.04
申请人	ANDERGAUGE LIMITED	发明人
分类号	E21B10/32;E21B17/07;E21B17/10;E21B23/04;E21B41/00;E21B47/09	主分类号	E21B10/32
代理机构		代理人
主权项
地址

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