DEVICE FOR SEALING MOUTH OF A WELL BEING DRILLED,申请号SU19813248317-传众专利搜索

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发明名称	DEVICE FOR SEALING MOUTH OF A WELL BEING DRILLED
摘要
申请公布号	SU956747(A1)	申请公布日期	1982.09.07
申请号	SU19813248317	申请日期	1981.02.13
申请人	MO GEOLOGORAZVEDOCHNYJ I IM.S.ORDZHONIKIDZE	发明人	BAZANOV LEV D,SU;GOROKHOV NIKOLAJ A,SU;KHROMIN EVGENIJ D,SU;KHROMIN ALEKSANDR D,SU;ZALOGIN VASILIJ P,SU
分类号	E21B33/03;(IPC1-7):E21B33/03	主分类号	E21B33/03
代理机构		代理人
主权项
地址

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