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发明名称
POWERED ROOF SUPPORT
摘要
申请公布号
SU649858(A1)
申请公布日期
1979.02.28
申请号
SU19772513518
申请日期
1977.07.27
申请人
INST GORNOGO DELA IM. A.A.SKOCHINSKOGO
发明人
APENKIN BORIS A,SU;GLUKHOV LEONID S,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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