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发明名称
Electron discharge device
摘要
申请公布号
US2264717(A)
申请公布日期
1941.12.02
申请号
US19390292974
申请日期
1939.09.01
申请人
RADIO CORPORATION OF AMERICA
发明人
RUEDY JOHN E.
分类号
H01J9/12
主分类号
H01J9/12
代理机构
代理人
主权项
地址
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