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经营范围
发明名称
Perfectionnements aux systèmes de réfrigération anodique des tubes électroniques
摘要
申请公布号
FR61177(E)
申请公布日期
1955.03.24
申请号
FRD61177
申请日期
1950.12.09
申请人
COMPAGNIE FRANCAISE THOMSON-HOUSTON
发明人
分类号
H01J19/36
主分类号
H01J19/36
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代理人
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