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发明名称
ROCK BLIND OPENING DEGASSING DEVICE
摘要
申请公布号
SU1765453(A2)
申请公布日期
1992.09.30
申请号
SU19904841892
申请日期
1990.06.25
申请人
VNII GORNOSPASATE
发明人
TOPCHIENKO BORIS I,SU;TARANETS YURIJ V,SU;BRZHEVSKIJ EVGENIJ I,SU
分类号
E21F1/00
主分类号
E21F1/00
代理机构
代理人
主权项
地址
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