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发明名称
UNA INSTALACION PARA LA CONSTRUCCION DE SUBTERRANEOS DE GRAN SECCION.
摘要
申请公布号
ES340777(A1)
申请公布日期
1968.06.16
申请号
ES19770003407
申请日期
1967.05.20
申请人
JACOBSON
发明人
分类号
E21D11/40;(IPC1-7):E01G/
主分类号
E21D11/40
代理机构
代理人
主权项
地址
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