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发明名称
Electro-acoustic transducers
摘要
申请公布号
GB2076257(A)
申请公布日期
1981.11.25
申请号
GB19810018364
申请日期
1980.12.18
申请人
SONY CORP
发明人
分类号
H04R1/06;H04R9/04;(IPC1-7):H04R9/02
主分类号
H04R1/06
代理机构
代理人
主权项
地址
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