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发明名称
Lampe électrique luminescente à cathode comportant plus de deux électrodes
摘要
申请公布号
FR842887(A)
申请公布日期
1939.06.21
申请号
FRD842887
申请日期
1938.09.01
申请人
OSA PARTICIPATIONS INDUSTRIELLES SOC. AN.
发明人
分类号
H01J17/04;H01J17/40
主分类号
H01J17/04
代理机构
代理人
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地址
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