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发明名称
Aparato amplificador de sonido
摘要
申请公布号
ES54340(U)
申请公布日期
1956.07.16
申请号
ES19400000543U
申请日期
1956.05.22
申请人
MARTÍN SELMA, JOSÉ
发明人
分类号
主分类号
代理机构
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