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发明名称
Nonemissive electrode for electron tube and method of making the same
摘要
申请公布号
US2417460(A)
申请公布日期
1947.03.18
申请号
US19450606926
申请日期
1945.07.25
申请人
EITEL-MCCULLOUGH, INC.
发明人
EITEL WILLIAM W.;MCCULLOUGH JACK A.
分类号
H01J19/30
主分类号
H01J19/30
代理机构
代理人
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地址
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