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发明名称
Electron discharge device
摘要
申请公布号
US2077177(A)
申请公布日期
1937.04.13
申请号
US19350018489
申请日期
1935.04.27
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
MCNALLY JAMES O.
分类号
H01J19/42
主分类号
H01J19/42
代理机构
代理人
主权项
地址
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