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发明名称
METHOD OF MINING THICK STEEP AND SLOPING COAL SEAMS
摘要
申请公布号
SU1659657(A1)
申请公布日期
1991.06.30
申请号
SU19894720447
申请日期
1989.07.20
申请人
VNI PK UGOLNYJ I "KUZNIUI"
发明人
TOMASHEVSKIJ LYUDVIG P,SU;PETROV ALEKSANDR I,SU;ISHKHNELI OTARI G,SU;KOKOULIN DANYAR I,SU;DUBROVSKIJ ARKADIJ A,SU;VOROTNYAK MIKHAIL V,SU
分类号
E21C41/18
主分类号
E21C41/18
代理机构
代理人
主权项
地址
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