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发明名称
Perfectionnements aux cathodes et aux autres électrodes de tubes à décharge thermoionique
摘要
申请公布号
FR824874(A)
申请公布日期
1938.02.17
申请号
FRD824874
申请日期
1937.07.28
申请人
COMPAGNIE FRANCAISE POUR L'EXPLOITATION DES PROCEDES THOMSON-HOUSTON
发明人
分类号
H01J1/16
主分类号
H01J1/16
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