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发明名称
ELECTRO-ACOUSTICTRANSDUCER
摘要
申请公布号
GB2025734(B)
申请公布日期
1982.11.24
申请号
GB19790024086
申请日期
1979.07.11
申请人
SIEMENS AG
发明人
分类号
H04R7/26;H04R1/08;H04R1/22;H04R17/02;(IPC1-7):H04R1/28
主分类号
H04R7/26
代理机构
代理人
主权项
地址
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