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经营范围
发明名称
Réseau transmetteur d'oscillations électriques
摘要
申请公布号
FR937950(A)
申请公布日期
1948.08.31
申请号
FRD937950
申请日期
1946.09.06
申请人
N. V. PHILIPS' GLOEILAMPENFABRIEKEN
发明人
分类号
H03C3/00;H03H7/06;H03H7/09;H04B14/00
主分类号
H03C3/00
代理机构
代理人
主权项
地址
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