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发明名称
PERFECCIONAMIENTOS EN MEMBRANAS PARA ALTAVOCES DE CUERPO CON CONFIGURACIËN QUEBRADA
摘要
申请公布号
ES296936(A1)
申请公布日期
1964.05.16
申请号
ES19360002969
申请日期
1964.02.27
申请人
VILA ROCA, JUAN
发明人
分类号
B06B;H04R;(IPC1-7):B06B
主分类号
B06B
代理机构
代理人
主权项
地址
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