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发明名称
ARRANGEMENT FOR EXTRACTING MATERIAL FROM UNDERGROUND FORMATION
摘要
申请公布号
SU1613615(A1)
申请公布日期
1990.12.15
申请号
SU19874319617
申请日期
1987.10.23
申请人
MO GEOLOGORAZVEDOCHNYJ I IM.SERGO ORDZHONIKIDZE
发明人
YUROJTS ALEKSEJ V,SU;EVSTIGNEEV IGOR YU,SU;SMIRNOV MIKHAIL M,SU;BENGIN NIKOLAJ V,SU
分类号
E21C45/00
主分类号
E21C45/00
代理机构
代理人
主权项
地址
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