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经营范围
发明名称
METHOD OF WORKING THICK COAL BEDS
摘要
申请公布号
SU775318(A1)
申请公布日期
1980.10.30
申请号
SU19782682753
申请日期
1978.11.10
申请人
VNII GORNOJ GEOMEKHANIKI MARKSHEJDERSKOGO DELA
发明人
KRUGLIKOV VYACHESLAV P,SU;ROZENBAUM MARK A,SU;BICH YAKOV A,SU;NIMETS ANANIJ ,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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