DEVICE FOR FORMING WELL BROADENING,申请号SU19762318639-传众专利搜索

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发明名称	DEVICE FOR FORMING WELL BROADENING
摘要
申请公布号	SU564386(A1)	申请公布日期	1977.07.05
申请号	SU19762318639	申请日期	1976.01.30
申请人	DN INZH-STR I;TREST "UKRGIDROSPETSFUNDAMENTSTROJ";MO AVTOMOBILNO-DOROZHNYJ INSTITUT	发明人	BALOVNEV VLADILEN ,SU;SERKO AFANASIJ P,SU;KHMARA LEONID A,SU;DAVYDOV GEORGIJ D,SU;ERMILOV ALEKSANDR B,SU
分类号	E21B7/30;(IPC1-7):E02D17/14;E21C17/00	主分类号	E21B7/30
代理机构		代理人
主权项
地址

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