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发明名称
Механизированная металлическая крепь
摘要
申请公布号
SU138562(A1)
申请公布日期
1960.11.30
申请号
SU19600651126
申请日期
1960.01.19
申请人
发明人
KORZHIKOV M.I.;PARAMONOV V.I.
分类号
E21D23/03;E21D23/06;E21D23/18
主分类号
E21D23/03
代理机构
代理人
主权项
地址
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