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发明名称
Mikrophon mit akustischer Frequenzanhebung.
摘要
申请公布号
DE68910139(D1)
申请公布日期
1993.12.02
申请号
DE19896010139
申请日期
1989.01.20
申请人
KNOWLES ELECTRONICS, INC., ITASCA, ILL., US
发明人
MADAFFARI, PETER L., ELGIN ILLINOIS, US
分类号
H04R1/28;H04R1/22;H04R19/01;H04R25/00;(IPC1-7):H04R1/22;H04R25/02
主分类号
H04R1/28
代理机构
代理人
主权项
地址
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