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发明名称
Electron discharge device
摘要
申请公布号
US2207355(A)
申请公布日期
1940.07.09
申请号
US19380227649
申请日期
1938.08.31
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
SHOCKLEY WILLIAM
分类号
H01J43/20
主分类号
H01J43/20
代理机构
代理人
主权项
地址
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