Wireline blowout preventer having mechanical and hydraulic sealing.,申请号EP19890309600-传众专利搜索

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发明名称	Wireline blowout preventer having mechanical and hydraulic sealing.
摘要
申请公布号	EP0403707(B1)	申请公布日期	1994.12.14
申请号	EP19890309600	申请日期	1989.09.21
申请人	EASTERN OIL TOOLS PTE, LTD.	发明人	LEGGETT, HENRY H.;GINGRAS, LIONEL M.
分类号	E21B33/06;E21B33/08;(IPC1-7):E21B33/06;E21B33/072	主分类号	E21B33/06
代理机构		代理人
主权项
地址

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