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经营范围
发明名称
AKOESTISCHE TRANSDUCENT.
摘要
申请公布号
NL7904924(A)
申请公布日期
1980.12.30
申请号
NL19790004924
申请日期
1979.06.25
申请人
N.V. PHILIPS' GLOEILAMPENFABRIEKEN TE EINDHOVEN.
发明人
分类号
G10K11/02;H04R17/00;(IPC1-7):H04R17/10;H01L41/10;H01L41/18
主分类号
G10K11/02
代理机构
代理人
主权项
地址
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