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发明名称
METHOD OF WORKING INTERCHAMBER PILLAR
摘要
申请公布号
RU2010972(C1)
申请公布日期
1994.04.15
申请号
SU19915014130
申请日期
1991.08.16
申请人
KRIVOROZHSKIJ GORNORUDNYJ INSTITUT
发明人
KRIVENKO YURIJ YU;KUSHNEREV IVAN P
分类号
E21C41/22;(IPC1-7):E21C41/22
主分类号
E21C41/22
代理机构
代理人
主权项
地址
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