DEVICE FOR SHUTTING-OFF LOST CIRCULATION ZONE,申请号SU19894774559-传众专利搜索

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发明名称	DEVICE FOR SHUTTING-OFF LOST CIRCULATION ZONE
摘要
申请公布号	RU2030554(C1)	申请公布日期	1995.03.10
申请号	SU19894774559	申请日期	1989.11.09
申请人	ROSTOVSKAYA GEOLOGORAZVEDOCHNAYA EKSPEDITSIYA PROIZVODSTVENNOGO GEOLOGICHESKOGO PREDPRIYATIYA "YUZHGEOLOGIYA";MAKEEV IVAN VASILEVICH	发明人	RUDENKO ALEKSEJ P;VEJSMAN ANATOLIJ D;KUZMIN GERMAN G;RUDOMETOV YURIJ G
分类号	E21B33/13;(IPC1-7):E21B33/13	主分类号	E21B33/13
代理机构		代理人
主权项
地址

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