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发明名称
Металлическая арочная податливая крепь
摘要
申请公布号
SU95393(A1)
申请公布日期
1952.11.30
申请号
SU19504341297
申请日期
1950.09.08
申请人
LINNIK P.I.
发明人
LINNIK P.I.
分类号
E21D11/14;E21D11/18
主分类号
E21D11/14
代理机构
代理人
主权项
地址
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