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发明名称
Electron discharge device
摘要
申请公布号
US2225447(A)
申请公布日期
1940.12.17
申请号
US19390294612
申请日期
1939.09.13
申请人
RADIO CORPORATION
发明人
HAEFF ANDREW V.;SMITH LLOYD P.
分类号
H01J23/10;H01J25/04
主分类号
H01J23/10
代理机构
代理人
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地址
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