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发明名称
Устройство для предварительной фокусировки и управления электронным лучом
摘要
申请公布号
SU59739(A1)
申请公布日期
1940.11.30
申请号
SU19400035685
申请日期
1940.03.31
申请人
YANCHEVSKIJ K.M.
发明人
YANCHEVSKIJ K.M.
分类号
H01J29/58
主分类号
H01J29/58
代理机构
代理人
主权项
地址
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