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发明名称
SET FOR DEEPENING VERTICAL MINE SHAFTS
摘要
申请公布号
SU752010(A1)
申请公布日期
1980.07.30
申请号
SU19772560799
申请日期
1977.12.26
申请人
G PI "YUZHGIPROSHAKHT"
发明人
DUROV EVGENIJ M,SU;IVENSKIJ NOJ S,SU
分类号
E21D1/00;(IPC1-7):E21D1/00
主分类号
E21D1/00
代理机构
代理人
主权项
地址
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