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发明名称
Acoustic device
摘要
申请公布号
GB9913465(D0)
申请公布日期
1999.08.11
申请号
GB19990013465
申请日期
1999.06.10
申请人
NEW TRANSDUCERS LIMITED
发明人
分类号
H04R17/00;H04R1/40;H04R7/04;H04R7/06
主分类号
H04R17/00
代理机构
代理人
主权项
地址
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