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经营范围
发明名称
ALTO FALANTE PIEZOELETRICO
摘要
申请公布号
BR8003971(A)
申请公布日期
1982.03.02
申请号
BR19800003971
申请日期
1980.06.25
申请人
DOS SANTOS E
发明人
DOS SANTOS E
分类号
H04R17/00;(IPC1-7):H04R17/00
主分类号
H04R17/00
代理机构
代理人
主权项
地址
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