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发明名称
METHOD OF RELIEVING AND CONSOLIDATING THE ROCK OF MINE WORKING ROOF
摘要
申请公布号
SU1536008(A1)
申请公布日期
1990.01.15
申请号
SU19874351165
申请日期
1987.12.28
申请人
PROIZV OB "APATIT" IM.S.M.KIROVA
发明人
EDIGAREV IGOR A,SU;TIKKOEV SERGEJ V,SU;SKATOVA TATYANA V,SU;POGREBNYAK INNA O,SU
分类号
E21D20/00
主分类号
E21D20/00
代理机构
代理人
主权项
地址
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