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经营范围
发明名称
Acoustic transducer.
摘要
申请公布号
EP0021534(A1)
申请公布日期
1981.01.07
申请号
EP19800200585
申请日期
1980.06.19
申请人
N.V. PHILIPS' GLOEILAMPENFABRIEKEN
发明人
VAN MAANEN, GERARDUS ANDREAS
分类号
G10K11/02;H04R17/00;(IPC1-7):G10K11/02
主分类号
G10K11/02
代理机构
代理人
主权项
地址
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