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发明名称
PERFECCIONAMIENTOS EN LAS PLANCHAS CONCAVAS DE HORMIGON ARMADO CURVADAS A MODO DE HIPÉRBOLA
摘要
申请公布号
ES293552(A1)
申请公布日期
1964.01.16
申请号
ES19520002935
申请日期
1963.11.15
申请人
SILBERKUHL, WILHELM JOHANNES;SILBERKUHL, UWE KASTL;HAEUSSLER, ERNST
发明人
分类号
(IPC1-7):E02
主分类号
(IPC1-7):E02
代理机构
代理人
主权项
地址
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