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经营范围
发明名称
Electrostatically focused travelling wave tubes
摘要
申请公布号
GB961187(A)
申请公布日期
1964.06.17
申请号
GB19600033045
申请日期
1960.09.26
申请人
RADIO CORPORATION OF AMERICA
发明人
分类号
H01J23/083;H01J25/38
主分类号
H01J23/083
代理机构
代理人
主权项
地址
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