WELL DRILLING UNDERREAMER,申请号SU19914933877-传众专利搜索

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发明名称	WELL DRILLING UNDERREAMER
摘要
申请公布号	RU1833449(C)	申请公布日期	1993.08.07
申请号	SU19914933877	申请日期	1991.05.05
申请人	KYSHTYMSKIJ MASHINOSTROITELNYJ ZAVOD IM.M.I.KALININA	发明人	SELIVANOV VALERIJ F;PLEKHANOV ILYA D;KURDYUKOV ALEKSANDR S;GALITSKOV GENNADIJ A;TROFIMOV NIKOLAJ S
分类号	E21B7/28	主分类号	E21B7/28
代理机构		代理人
主权项
地址

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