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发明名称
Perfectionnements aux tubes à décharge électronique, particulièrement à la construction et au montage de leurs électrodes
摘要
申请公布号
FR35531(E)
申请公布日期
1930.03.22
申请号
FRD35531
申请日期
1928.06.02
申请人
COMPAGNIE FRANCAISE POUR L'EXPLOITATION DES PROCEDES THOMSON-HOUSTON
发明人
分类号
H01J1/18
主分类号
H01J1/18
代理机构
代理人
主权项
地址
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