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发明名称
Entladungsroehre mit zu einem Elektronenstrahl gebuendelter Entladung
摘要
申请公布号
DE901447(C)
申请公布日期
1954.01.11
申请号
DE1932T001152D
申请日期
1932.12.25
申请人
TELEFUNKEN GESELLSCHAFT FUER DRAHTLOSE TELEGRAPHIE M.B.H.
发明人
分类号
H01J29/02
主分类号
H01J29/02
代理机构
代理人
主权项
地址
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