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发明名称
Changeur de fréquence additif
摘要
申请公布号
FR1148631(A)
申请公布日期
1957.12.12
申请号
FRD1148631
申请日期
1956.03.08
申请人
N. V. PHILIPS' GLOEILAMPENFABRIEKEN
发明人
分类号
H03D7/08;H04B15/06
主分类号
H03D7/08
代理机构
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