WELL HEAD ARRANGEMENT FOR RELEASING STUCK PIPES,申请号SU19894672808-传众专利搜索

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发明名称	WELL HEAD ARRANGEMENT FOR RELEASING STUCK PIPES
摘要
申请公布号	SU1640358(A1)	申请公布日期	1991.04.07
申请号	SU19894672808	申请日期	1989.04.04
申请人	LVOVSKIJ POLT I IM.LENINSKOGO KOMSOMOLA	发明人	KHARCHENKO EVGENIJ V,SU
分类号	E21B31/107	主分类号	E21B31/107
代理机构		代理人
主权项
地址

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