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经营范围
发明名称
TRANSDUCTOR ELECTROACUSTICO.
摘要
申请公布号
ES226216(Y)
申请公布日期
1977.08.01
申请号
ES19160002262U
申请日期
1977.02.05
申请人
发明人
分类号
H04R;(IPC1-7):04R/
主分类号
H04R
代理机构
代理人
主权项
地址
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