METHOD AND APPARATUS FOR WELL CLOSURE,申请号GB19910019004-传众专利搜索

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发明名称	METHOD AND APPARATUS FOR WELL CLOSURE
摘要
申请公布号	GB9119004(D0)	申请公布日期	1991.10.23
申请号	GB19910019004	申请日期	1991.09.04
申请人	TRISTAR OILFIELD SERVICES LTD.	发明人
分类号	E21B29/08;E21B33/00;E21B34/02	主分类号	E21B29/08
代理机构		代理人
主权项
地址

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