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发明名称
Vacuum tube
摘要
申请公布号
US2459791(A)
申请公布日期
1949.01.25
申请号
US19430480662
申请日期
1943.03.26
申请人
FEDERAL TELEPHONE AND RADIO CORPORATION
发明人
CHEVIGNY PAUL GEORGES;WHEELER CARSON MCKEAG
分类号
H01J25/50;H01J25/54
主分类号
H01J25/50
代理机构
代理人
主权项
地址
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