Improvements in or relating to steerable rotary drilling systems,申请号GB19950003830-传众专利搜索

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发明名称	Improvements in or relating to steerable rotary drilling systems
摘要
申请公布号	GB9503830(D0)	申请公布日期	1995.04.19
申请号	GB19950003830	申请日期	1995.02.25
申请人	CAMCO DRILLING GROUP LIMITED	发明人
分类号	E21B7/06;E21B21/10	主分类号	E21B7/06
代理机构		代理人
主权项
地址

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