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发明名称
Perfectionnements aux tubes à champs électrique et magnétique croisés
摘要
申请公布号
FR1129215(A)
申请公布日期
1957.01.17
申请号
FRD1129215
申请日期
1955.07.25
申请人
COMPAGNIE GENERALE DE TELEGRAPHIE SANS FIL
发明人
分类号
H01J25/44
主分类号
H01J25/44
代理机构
代理人
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