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发明名称
Thermionic electrode
摘要
申请公布号
US2117636(A)
申请公布日期
1938.05.17
申请号
US19340717152
申请日期
1934.03.24
申请人
TJOFLAT GERALD B
发明人
TJOFLAT GERALD B.
分类号
H01J1/28
主分类号
H01J1/28
代理机构
代理人
主权项
地址
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