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发明名称
Vacuum tube
摘要
申请公布号
US2594005(A)
申请公布日期
1952.04.22
申请号
US19470746774
申请日期
1947.05.08
申请人
SAMUEL FREEDMAN;FONDA BONARDI GIUSTO
发明人
FREEDMAN SAMUEL;BONARDI GIUSTO FONDA
分类号
H01J21/06
主分类号
H01J21/06
代理机构
代理人
主权项
地址
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