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发明名称
PERFECCIONAMIENTOS EN LA FABRICACIËN DE ELEMENTOS DE HORMIGËN PRETENSADO
摘要
申请公布号
ES305228(A2)
申请公布日期
1965.05.01
申请号
ES19280003052
申请日期
1964.10.23
申请人
BARREDO DE VALENZUELA, RICARDO
发明人
分类号
E04C;(IPC1-7):E04C
主分类号
E04C
代理机构
代理人
主权项
地址
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