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发明名称
TRAMO DE ESCALERA PREFABRICADO EN HORMIGON ARMADO, PRETENSA-DO O POSTENSADO.
摘要
申请公布号
ES236563(Y)
申请公布日期
1978.11.16
申请号
ES19630002365U
申请日期
1978.06.08
申请人
发明人
分类号
E04F;(IPC1-7):04F/
主分类号
E04F
代理机构
代理人
主权项
地址
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