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发明名称
Perfectionnements aux tubes électroniques
摘要
申请公布号
FR866058(A)
申请公布日期
1941.06.16
申请号
FRD866058
申请日期
1940.02.28
申请人
COMPAGNIE FRANCAISE POUR L'EXPLOITATION DES PROCEDES THOMSON-HOUSTON
发明人
分类号
H01J31/34
主分类号
H01J31/34
代理机构
代理人
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地址
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