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发明名称
Perfectionnements aux tubes électroniques à plusieurs électrodes
摘要
申请公布号
FR885730(A)
申请公布日期
1943.09.23
申请号
FRD885730
申请日期
1942.09.05
申请人
COMPAGNIE GENERALE DE TELEGRAPHIE SANS FIL
发明人
分类号
H01J19/80
主分类号
H01J19/80
代理机构
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DISPLAY APPARATUS
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