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发明名称
Nouvelles lentilles électroniques magnétiques
摘要
申请公布号
FR987931(A)
申请公布日期
1951.08.21
申请号
FRD987931
申请日期
1943.04.19
申请人
发明人
DUPOUY GASTON
分类号
H01J37/14
主分类号
H01J37/14
代理机构
代理人
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