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发明名称
Mehrsystemroehre fuer Empfangs- und Verstaerkerschaltungen
摘要
申请公布号
DE684859(C)
申请公布日期
1939.12.06
申请号
DED684859D
申请日期
1930.02.09
申请人
RADIOAKTIENGESELLSCHAFT D.S. LOEWE
发明人
TRAUTWEIN DR.-ING. FRIEDRICH
分类号
H01J21/20
主分类号
H01J21/20
代理机构
代理人
主权项
地址
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