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发明名称
Ultra high frequency generator vacuum tube and cathode structure therefor
摘要
申请公布号
US2450763(A)
申请公布日期
1948.10.05
申请号
US19430493444
申请日期
1943.07.03
申请人
MCNALL JOHN W
发明人
MCNALL JOHN W.
分类号
H01J23/05
主分类号
H01J23/05
代理机构
代理人
主权项
地址
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