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经营范围
发明名称
Montage amplificateur à basse fréquence
摘要
申请公布号
FR881084(A)
申请公布日期
1943.04.14
申请号
FRD881084
申请日期
1942.04.07
申请人
N. V. PHILIPS' GLOEILAMPENFABRIEKEN
发明人
分类号
H03F3/02;H03F3/22;H04R3/08
主分类号
H03F3/02
代理机构
代理人
主权项
地址
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