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发明名称
Hochfrequenzverstaerker mit einer Entladungsroehre, die eine bei Erhitzung emittierende Kathode, mindestens ein Steuergitter, eine Anode und eine bei Elektronenbombardement emittierende Hilfskathode aufweist
摘要
申请公布号
DE725518(C)
申请公布日期
1942.09.24
申请号
DE1937N040630
申请日期
1937.04.21
申请人
PHILIPS PATENTVERWALTUNG G.M.B.H.
发明人
MARKUS NOLKE SIEDS
分类号
H01J43/02;H03F3/02;H03F3/28;H03F3/54;H03K6/02;H04N5/60
主分类号
H01J43/02
代理机构
代理人
主权项
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