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发明名称
Amplificateur thermïonique à réaction négative et à réglage de l'intensité du son
摘要
申请公布号
FR861112(A)
申请公布日期
1941.02.01
申请号
FRD861112
申请日期
1939.10.25
申请人
N. V. PHILIPS' GLOEILAMPENFABRIEKEN
发明人
分类号
H03G9/08
主分类号
H03G9/08
代理机构
代理人
主权项
地址
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