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发明名称
Electrical system
摘要
申请公布号
US2088198(A)
申请公布日期
1937.07.27
申请号
US19330676887
申请日期
1933.06.21
申请人
RADIO CORPORATION OF AMERICA
发明人
GEFFCKEN HEINRICH;RICHTER HANS
分类号
H01J21/02;H01J40/14
主分类号
H01J21/02
代理机构
代理人
主权项
地址
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