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经营范围
发明名称
Piezo-electric tweeter
摘要
申请公布号
PHUM5884(Z)
申请公布日期
1985.09.27
申请号
PHUM8345U
申请日期
1983.04.20
申请人
发明人
分类号
H04R17/00;(IPC1-7):H04R17/00
主分类号
H04R17/00
代理机构
代理人
主权项
地址
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