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发明名称
OPEN-PIT BANK
摘要
申请公布号
SU1767176(A1)
申请公布日期
1992.10.07
申请号
SU19894762915
申请日期
1989.11.27
申请人
SP KT BYURO I GEOTEKHNICHESKOJ MEKHANIKI AN USSR
发明人
PARSHKIN EDUARD M,SU
分类号
E21C41/00
主分类号
E21C41/00
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代理人
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