SURFACE CONTROLLED SUBSURFACE SAFETY VALVE,申请号GB19860008491-传众专利搜索

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发明名称	SURFACE CONTROLLED SUBSURFACE SAFETY VALVE
摘要
申请公布号	GB8608491(D0)	申请公布日期	1986.05.14
申请号	GB19860008491	申请日期	1986.08.04
申请人	OTIS ENG CORPORATION	发明人
分类号	E21B23/03;E21B34/06;E21B34/10;E21B34/16;(IPC1-7):E21B34/10	主分类号	E21B23/03
代理机构		代理人
主权项
地址

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