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发明名称
Indirekt durch Waermestrahlung geheitzte Gluehkathode fuer Vakuumroehren
摘要
申请公布号
DE676039(C)
申请公布日期
1939.05.24
申请号
DE1927L068620D
申请日期
1927.05.05
申请人
RADIOAKTIENGESELLSCHAFT D.S. LOEWE
发明人
分类号
H01J1/20
主分类号
H01J1/20
代理机构
代理人
主权项
地址
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