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经营范围
发明名称
Perfectionnements aux tubes électroniques
摘要
申请公布号
FR1456604(A)
申请公布日期
1966.07.08
申请号
FR19650025270
申请日期
1965.07.20
申请人
RADIO CORPORATION OF AMERICA
发明人
分类号
H01J19/36
主分类号
H01J19/36
代理机构
代理人
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