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发明名称
Ny typ av elektroakustisk omvandlare för tonfrekvens- och ultraljudsområdet
摘要
申请公布号
SE9704353(D0)
申请公布日期
1997.11.24
申请号
SE19970004353
申请日期
1997.11.24
申请人
BO BENGTSSON
发明人
分类号
H04R;(IPC1-7):H04R/
主分类号
H04R
代理机构
代理人
主权项
地址
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