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发明名称
Electron discharge device
摘要
申请公布号
US2284733(A)
申请公布日期
1942.06.02
申请号
US19390292812
申请日期
1939.08.31
申请人
RADIO CORPORATION OF AMERICA
发明人
HAEFF ANDREW V.
分类号
H01J25/04
主分类号
H01J25/04
代理机构
代理人
主权项
地址
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