Core barrel with adjustable joint,申请号GB19890010500-传众专利搜索

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发明名称	Core barrel with adjustable joint
摘要
申请公布号	GB2218138(A)	申请公布日期	1989.11.08
申请号	GB19890010500	申请日期	1989.05.08
申请人	* ORECO HOLDINGS LIMITED	发明人	JOHN RICHARD NEVILLE * ROE;HECTOR, FILLIPUS ALEXANDER VAN * DRENTHAM-SUSMAN
分类号	E21B25/00	主分类号	E21B25/00
代理机构		代理人
主权项
地址

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