Downhole safety valve apparatus and method,申请号EGNA20007000292-传众专利搜索

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发明名称	Downhole safety valve apparatus and method
摘要
申请公布号	EG24428(A)	申请公布日期	2009.06.15
申请号	EGNA20007000292	申请日期	2007.03.18
申请人	BJ SERVICES COMPANY	发明人	BOLDING JEFFREY L.;SMITH DAVID R.
分类号		主分类号
代理机构		代理人
主权项
地址

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