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发明名称
APERFEICOAMENTO DE ALTO-FALANTE
摘要
申请公布号
BR9201536(A)
申请公布日期
1993.11.03
申请号
BR1992PI01536
申请日期
1992.04.27
申请人
FERNANDO FUSARO PEREIRA
发明人
FERNANDO FUSARO PEREIRA
分类号
H04R1/20;(IPC1-7):H04R1/20
主分类号
H04R1/20
代理机构
代理人
主权项
地址
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