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发明名称
Electron discharge modulating device
摘要
申请公布号
US2198340(A)
申请公布日期
1940.04.23
申请号
US19370165633
申请日期
1937.09.25
申请人
RADIO CORPORATION OF AMERICA
发明人
HARRIS WILLIAM A.
分类号
H01J21/02;H03D7/10
主分类号
H01J21/02
代理机构
代理人
主权项
地址
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