DOWNHOLE STRING BYPASS APPARATUS,申请号EP19870307562-传众专利搜索

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发明名称	DOWNHOLE STRING BYPASS APPARATUS
摘要
申请公布号	EP0265054(A3)	申请公布日期	1989.11.08
申请号	EP19870307562	申请日期	1987.08.26
申请人	HALLIBURTON COMPANY	发明人	CHRISTENSEN, JON BRENT
分类号	E21B33/124;(IPC1-7):E21B33/124	主分类号	E21B33/124
代理机构		代理人
主权项
地址

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