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发明名称
Magnetsystem, særlig til elektroakustiske Apparater.
摘要
申请公布号
DK51736(C)
申请公布日期
1936.06.08
申请号
DKD51736
申请日期
1935.10.12
申请人
N. V. PHILIPS' GLOEILAMPENFABRIEKEN
发明人
分类号
主分类号
代理机构
代理人
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