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经营范围
发明名称
METHOD OF WORKING THICK SLOPING COAL BEDS
摘要
申请公布号
SU836357(A1)
申请公布日期
1981.06.07
申请号
SU19792803424
申请日期
1979.07.27
申请人
VNI K UGOLNYJ INSTITUT
发明人
TOMASHEVSKIJ LYUDVIG P,SU;VOROTNYAK MIKHAIL V,SU;MILOVANOV IVAN B,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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