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发明名称
Roehren-Apparat und Vakuumroehre zur Benutzung dieses Apparates
摘要
申请公布号
DE511033(C)
申请公布日期
1930.10.25
申请号
DENDATT034774D
申请日期
申请人
TELEFUNKEN GESELLSCHAFT FUER DRAHTLOSE TELEGRAPHIE M.B.H.
发明人
分类号
H04B1/06
主分类号
H04B1/06
代理机构
代理人
主权项
地址
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