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发明名称
DISPOSITIVO COSTRUTTIVO PER LA REALIZZAZIONE DI GALLLERIE NATURALI CON COPERTURA ASSENTE O INSUFFICIENTE
摘要
申请公布号
IT1292419(B1)
申请公布日期
1999.02.08
申请号
IT1997MI01499
申请日期
1997.06.25
申请人
ROCKSOIL S.P.A.
发明人
LUNARDI PIETRO
分类号
E21D
主分类号
E21D
代理机构
代理人
主权项
地址
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