Downhole safety valve,申请号GB20100004979-传众专利搜索

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发明名称	Downhole safety valve
摘要
申请公布号	GB2465928(A)	申请公布日期	2010.06.09
申请号	GB20100004979	申请日期	2006.03.23
申请人	WEATHERFORD/LAMB INC.	发明人	RODDIE R. SMITH
分类号	E21B34/08;E21B34/10;E21B34/12	主分类号	E21B34/08
代理机构		代理人
主权项
地址

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