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经营范围
发明名称
Elektronenroehre
摘要
申请公布号
DE665554(C)
申请公布日期
1938.10.06
申请号
DE1929R090899D
申请日期
1929.06.18
申请人
AUDIONWERK D. S. LOEWE G.M.B.H.;RADIOAKTIENGESELLSCHAFT D. S. LOEWE
发明人
分类号
H01J19/28
主分类号
H01J19/28
代理机构
代理人
主权项
地址
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