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发明名称
Cathode à chauffage indirect pour lampes ou tubes à décharge électrique
摘要
申请公布号
FR791661(A)
申请公布日期
1935.12.14
申请号
FRD791661
申请日期
1935.06.24
申请人
EGYESULT IZZOLAMPA ES VILLAMOSSAGI R. T.
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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