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发明名称
A transparent piezoelectric loudspeaker
摘要
申请公布号
GB2358546(A)
申请公布日期
2001.07.25
申请号
GB20010007749
申请日期
1999.11.12
申请人
* NEC CORPORATION
发明人
NOZOMI * TOKI
分类号
B06B1/06;G02F1/13;H04M1/03;H04N5/64;H04R17/00;(IPC1-7):H04R17/00
主分类号
B06B1/06
代理机构
代理人
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