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发明名称
APARATO PARA IMPRESIONAR Y REPRODUCIR EL SONIDO
摘要
申请公布号
ES123732(A1)
申请公布日期
1931.09.01
申请号
ES19320001237
申请日期
1931.08.04
申请人
SOCIEDAD IBERICA DE CONSTRUCCIONES ELECTRICAS
发明人
分类号
(IPC1-7):H04
主分类号
(IPC1-7):H04
代理机构
代理人
主权项
地址
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