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发明名称
Entladungsröhre mit einer Elektronenquelle, mindestens einem Gitter und einer Anode.
摘要
申请公布号
AT155373(B)
申请公布日期
1939.01.10
申请号
ATD155373
申请日期
1937.02.18
申请人
TELEFUNKEN GESELLSCHAFT FUER DRAHTLOSE TELEGRAPHIE M. B. H.
发明人
分类号
主分类号
代理机构
代理人
主权项
地址
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