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发明名称
METHOD OF MINING THICK STEEP COAL SEAMS
摘要
申请公布号
SU702170(A1)
申请公布日期
1979.12.05
申请号
SU19762427444
申请日期
1976.12.06
申请人
VNI PK UGOLNYJ INSTITUT
发明人
TOMASHEVSKIJ LYUDVIG P,SU;MILOVANOV IVAN B,SU;VOROTNYAK MIKHAIL V,SU
分类号
(IPC1-7):E21C41/04
主分类号
(IPC1-7):E21C41/04
代理机构
代理人
主权项
地址
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