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发明名称
Capping means for electric vacuum tubes
摘要
申请公布号
US2516450(A)
申请公布日期
1950.07.25
申请号
US19470741654
申请日期
1947.04.15
申请人
SOCIETE FRANCAISE RADIO ELECTRIQUE
发明人
COMMIN ANDRE
分类号
H01J9/30;H01J19/66
主分类号
H01J9/30
代理机构
代理人
主权项
地址
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