METHOD MINING PERMAFROST PLACERS,申请号SU19904835295-传众专利搜索

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发明名称	METHOD MINING PERMAFROST PLACERS
摘要
申请公布号	SU1710753(A1)	申请公布日期	1992.02.07
申请号	SU19904835295	申请日期	1990.06.05
申请人	VNII ZOLOTA REDKIKH METALLOV	发明人	LAVROV NIKOLAJ P,SU;PERLSHTEJN GEORGIJ Z,SU;KHRULEV ALEKSANDR S,SU
分类号	E21C41/22	主分类号	E21C41/22
代理机构		代理人
主权项
地址

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