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经营范围
发明名称
Aimant de dispositifs électrodynamiques, tels que haut-parleurs, microphones, lecteurs phonographiques, etc.
摘要
申请公布号
FR728897(A)
申请公布日期
1932.07.12
申请号
FRD728897
申请日期
1931.12.28
申请人
N. V. PHILIPS' GLOEILAMPENFABRIEKEN
发明人
分类号
H04R9/02
主分类号
H04R9/02
代理机构
代理人
主权项
地址
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