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发明名称
Perfectionnements aux circuits de lampes thermioniques destinés particulièrement à la télévision
摘要
申请公布号
FR821198(A)
申请公布日期
1937.11.29
申请号
FRD821198
申请日期
1937.04.28
申请人
ELECTRIC & MUSICAL INDUSTRIES LIMITED
发明人
分类号
H03K4/43
主分类号
H03K4/43
代理机构
代理人
主权项
地址
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