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发明名称
METHOD OF EXCAVATING NONCOHESIVE SATURATED ROCK FROM PRODUCING LEVELS
摘要
申请公布号
SU1518522(A1)
申请公布日期
1989.10.30
申请号
SU19874319624
申请日期
1987.10.23
申请人
MO GEOLOGORAZVEDOCHNYJ I IM.SERGO ORDZHONIKIDZE
发明人
SMIRNOV MIKHAIL M,SU;YUROJTS ALEKSEJ V,SU;KOZLOV VIKTOR S,SU;BUYANOV VLADIMIR R,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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