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发明名称
ESCALERA DE EMERGENCIA, PERFECCIONADA
摘要
申请公布号
ES244765(Y)
申请公布日期
1980.04.16
申请号
ES19650002447U
申请日期
1979.07.26
申请人
发明人
分类号
E04F11/06;(IPC1-7):04F11/06
主分类号
E04F11/06
代理机构
代理人
主权项
地址
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