METHOD OF DETERMINING DIRECTION OF HOLES,申请号SU19874274853-传众专利搜索

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发明名称	METHOD OF DETERMINING DIRECTION OF HOLES
摘要
申请公布号	SU1594268(A1)	申请公布日期	1990.09.23
申请号	SU19874274853	申请日期	1987.07.01
申请人	NORILSKIJ GORNO-METALLURGICHESKIJ KOMBINAT IM.A.P.ZAVENYAGINA	发明人	BOJKO SERGEJ V,SU;SHATALOV STANISLAV S,SU
分类号	E21B47/022;E21C39/00	主分类号	E21B47/022
代理机构		代理人
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地址

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