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发明名称
Thermionic tube
摘要
申请公布号
US2000304(A)
申请公布日期
1935.05.07
申请号
US19310532742
申请日期
1931.04.25
申请人
TERMAN FREDERICK E
发明人
TERMAN FREDERICK E.
分类号
H01J43/02
主分类号
H01J43/02
代理机构
代理人
主权项
地址
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