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发明名称
Permadynamisk højttaler med midler til undertrykkelse af skadelige spredningsfelter og apparat forsynet med sådanne højttalere.
摘要
申请公布号
DK98443(C)
申请公布日期
1964.04.13
申请号
DK19600002339
申请日期
1960.06.16
申请人
N. V. PHILIPS' GLOEILAMPENFABRIEKEN
发明人
分类号
H04M;(IPC1-7):H04M
主分类号
H04M
代理机构
代理人
主权项
地址
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