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发明名称
APPARATUS FOR CONTROLLING THE STATE OF MINE WORKING ROOF
摘要
申请公布号
SU1082950(A1)
申请公布日期
1984.03.30
申请号
SU19823488974
申请日期
1982.09.20
申请人
MO GORNYJ INSTITUT
发明人
NOVIK GOTFRID YA,SU;BUROV IGOR YU,SU;DIASHOVA GALINA M,SU
分类号
E21C39/00;(IPC1-7):E21C39/00
主分类号
E21C39/00
代理机构
代理人
主权项
地址
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