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发明名称
Electron tube
摘要
申请公布号
US2177350(A)
申请公布日期
1939.10.24
申请号
US19340715587
申请日期
1934.03.15
申请人
ALLGEMEINE ELEKTRICITATS GESELLSCHAFT
发明人
DOBKE GUENTHER
分类号
H01J29/54
主分类号
H01J29/54
代理机构
代理人
主权项
地址
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