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经营范围
发明名称
METHOD FOR PLACER MINING
摘要
申请公布号
RU2039271(C1)
申请公布日期
1995.07.09
申请号
RU19920003564
申请日期
1992.11.03
申请人
IVANOV EGOR V
发明人
IVANOV EGOR V
分类号
E21C41/26;(IPC1-7):E21C41/26
主分类号
E21C41/26
代理机构
代理人
主权项
地址
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