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发明名称
Appareil de mesure ou de contrôle du fonctionnement des tubes radio-électriques
摘要
申请公布号
FR1005336(A)
申请公布日期
1952.04.09
申请号
FRD1005336
申请日期
1947.07.04
申请人
发明人
GOETZ KARL
分类号
G01R31/25
主分类号
G01R31/25
代理机构
代理人
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