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经营范围
发明名称
Verfahren zur Herstellung einer betriebsmaessig mit einem ungesaettigten Dampf unter niedrigem Druck arbeitenden elektrischen Entladungsroehre
摘要
申请公布号
DE699369(C)
申请公布日期
1940.11.27
申请号
DE193700T9152D
申请日期
1937.09.04
申请人
TELEFUNKEN GESELLSCHAFT FUER DRAHTLOSE TELEGRAPHIE M.B.H.
发明人
ENDE DR. WERNER
分类号
H01J9/395
主分类号
H01J9/395
代理机构
代理人
主权项
地址
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