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发明名称
Dispositif à décharge électronique
摘要
申请公布号
FR790940(A)
申请公布日期
1935.11.29
申请号
FRD790940
申请日期
1935.06.06
申请人
RADIO CORPORATION OF AMERICA
发明人
分类号
H01J5/44;H01J5/46;H01J19/42;H01J21/06
主分类号
H01J5/44
代理机构
代理人
主权项
地址
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