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经营范围
发明名称
METHOD OF SUPPORTING MINE WORKINGS
摘要
申请公布号
SU700649(A1)
申请公布日期
1979.11.30
申请号
SU19782619629
申请日期
1978.05.23
申请人
VNII GORNOJ GEOMEKHANIKI MARKSHEJDERSKOGO DELA
发明人
NIMETS ANANIJ ,SU;BICH YAKOV A,SU;KRUGLIKOV VYACHESLAV P,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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