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经营范围
发明名称
Gasentladungsapparat mit einer direkt beheizten Gluehkathode
摘要
申请公布号
DE690063(C)
申请公布日期
1940.04.15
申请号
DE193401S5448D
申请日期
1934.09.20
申请人
SIEMENS-SCHUCKERTWERKE AKT.-GES.
发明人
KRENZIEN OTTO
分类号
H01J1/16;H01J17/06
主分类号
H01J1/16
代理机构
代理人
主权项
地址
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