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发明名称
Electron tubes
摘要
申请公布号
US2932754(A)
申请公布日期
1960.04.12
申请号
US19570675080
申请日期
1957.07.30
申请人
THE MACHLETT LABORATORIES, INCORPORATED
发明人
HARRIES JOHN H. O.;HARRIES BARBARA K.
分类号
H01J21/14
主分类号
H01J21/14
代理机构
代理人
主权项
地址
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