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发明名称
Dispositivo auxilar de bisagra para escaleras de mano
摘要
申请公布号
ES88643(U)
申请公布日期
1961.10.16
申请号
ES19430000886U
申请日期
1961.08.08
申请人
BARAU GRAU, PEDRO
发明人
分类号
主分类号
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