DEVELOPMENT DRILLING SYSTEM,申请号GB19880016784-传众专利搜索

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发明名称	DEVELOPMENT DRILLING SYSTEM
摘要
申请公布号	GB8816784(D0)	申请公布日期	1988.08.17
申请号	GB19880016784	申请日期	1988.07.14
申请人	FOREX NEPTUNE SA	发明人
分类号	E21B7/128;E21B19/00;E21B43/01;E21B43/017	主分类号	E21B7/128
代理机构		代理人
主权项
地址

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