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发明名称
PIEZOELECTRIC SOUND TRANSDUCER
摘要
申请公布号
GB2096860(B)
申请公布日期
1984.09.19
申请号
GB19810009825
申请日期
1981.03.30
申请人
PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES LTD
发明人
分类号
G10K9/122;H04R17/10;(IPC1-7):H04R17/10
主分类号
G10K9/122
代理机构
代理人
主权项
地址
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