Downhole safety valve apparatus and method,申请号AU20050286875-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	AU2005286875(A1)	申请公布日期	2006.03.30
申请号	AU20050286875	申请日期	2005.09.20
申请人	BJ SERVICES COMPANY	发明人	DAVID R. SMITH;JEFFREY L. BOLDING
分类号	E21B33/12	主分类号	E21B33/12
代理机构		代理人
主权项
地址

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