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发明名称
Multigrid electron discharge tube
摘要
申请公布号
US2214808(A)
申请公布日期
1940.09.17
申请号
US19390294414
申请日期
1939.09.12
申请人
RADIO CORPORATION OF AMERICA
发明人
BURNSIDE DON G.
分类号
H01J19/00;H01J21/12
主分类号
H01J19/00
代理机构
代理人
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地址
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