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发明名称
Cathode structure for electron discharge devices
摘要
申请公布号
US2448573(A)
申请公布日期
1948.09.07
申请号
US19460650962
申请日期
1946.02.28
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
BLAZIER CHARLES R.;HALE DOUGLAS A. S.
分类号
H01J1/20
主分类号
H01J1/20
代理机构
代理人
主权项
地址
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