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发明名称
Dispositif amplificateur de tensions continues
摘要
申请公布号
FR942867(A)
申请公布日期
1949.02.21
申请号
FRD942867
申请日期
1946.08.30
申请人
N. V. PHILIPS' GLOEILAMPENFABRIEKEN
发明人
分类号
H03D1/16;H03F3/40
主分类号
H03D1/16
代理机构
代理人
主权项
地址
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