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发明名称
Perfectionnement aux lentilles électroniques électrostatiques à haute tension
摘要
申请公布号
FR935241(A)
申请公布日期
1948.06.14
申请号
FRD935241
申请日期
1946.10.18
申请人
COMPAGNIE GENERALE DE TELEGRAPHIE SANS FIL
发明人
分类号
H01J37/12
主分类号
H01J37/12
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