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经营范围
发明名称
POWER MINE ROOF SUPPORT UNIT
摘要
申请公布号
SU1033760(A1)
申请公布日期
1983.08.07
申请号
SU19782590144
申请日期
1978.03.09
申请人
PODMOSKOVNYJ NI PK UGOLNYJ INSTITUT
发明人
NUZHNOV PETR N,SU;KRASHKIN IVAN S,SU;SOKOLOV SERGEJ I,SU
分类号
E21D23/00;(IPC1-7):E21D23/00
主分类号
E21D23/00
代理机构
代理人
主权项
地址
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