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发明名称
Verfahren zur Zusammensetzung von Elektronenroehren
摘要
申请公布号
DE516073(C)
申请公布日期
1931.01.16
申请号
DE1925C036735D
申请日期
1925.05.26
申请人
COMPAGNIE GENERALE DE TELEGRAPHIE SANS FIL
发明人
分类号
H01J19/34
主分类号
H01J19/34
代理机构
代理人
主权项
地址
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