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发明名称
PLACA POLIGONAL PERFECCIONADA PARA SUSTENTO DE EXCAVACIONES Y TERRENOS.
摘要
申请公布号
ES1012918(U)
申请公布日期
1990.10.01
申请号
ES19900000587U
申请日期
1990.02.23
申请人
ARANA SAGASTA LUCIO
发明人
分类号
E02D31/10;E04C5/03;(IPC1-7):E04C5/03
主分类号
E02D31/10
代理机构
代理人
主权项
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