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发明名称
ENTIBACION PARA GALERIAS DE TUNELES O MINAS.
摘要
申请公布号
ES367731(A2)
申请公布日期
1971.04.16
申请号
ES19310003677
申请日期
1969.05.27
申请人
KACIC
发明人
分类号
E21D11/15;(IPC1-7):21D/;01G/
主分类号
E21D11/15
代理机构
代理人
主权项
地址
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