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发明名称
PERFECCIONAMIENTOS EN LA CONSTRUCCIËN DE ESCALERAS CIRCULARES DE ELEMENTOS PREFABRICADOS
摘要
申请公布号
ES241087(A1)
申请公布日期
1958.11.01
申请号
ES19870002410
申请日期
1958.03.29
申请人
REVERT, YVES
发明人
分类号
E06C;(IPC1-7):E06C
主分类号
E06C
代理机构
代理人
主权项
地址
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