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发明名称
Electron discharge device
摘要
申请公布号
US2257794(A)
申请公布日期
1941.10.07
申请号
US19390287235
申请日期
1939.07.29
申请人
RADIO CORPORATION OF AMERICA
发明人
GARNER LLOYD P.
分类号
H01J21/06
主分类号
H01J21/06
代理机构
代理人
主权项
地址
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