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经营范围
发明名称
Montage amplificateur électrique
摘要
申请公布号
FR838319(A)
申请公布日期
1939.03.02
申请号
FRD838319
申请日期
1938.05.23
申请人
N. V. PHILIPS' GLOEILAMPENFABRIEKEN
发明人
分类号
C22C28/00;H03F1/36
主分类号
C22C28/00
代理机构
代理人
主权项
地址
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