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发明名称
Способ гидромеханизированной разработки тонких пологопадающих пластов длинными столбами по восстанию
摘要
申请公布号
SU114049(A1)
申请公布日期
1957.11.30
申请号
SU19560562629
申请日期
1956.11.27
申请人
MIKHALYUK P.P.
发明人
MIKHALYUK P.P.
分类号
E21C25/60;E21C41/18;E21C45/00
主分类号
E21C25/60
代理机构
代理人
主权项
地址
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