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发明名称
Electron beam convergence apparatus
摘要
申请公布号
US2875374(A)
申请公布日期
1959.02.24
申请号
US19560619197
申请日期
1956.10.30
申请人
RADIO CORPORATION OF AMERICA
发明人
COOPER JOHN C.;HAGMANN ROBERT W.
分类号
H04N9/28
主分类号
H04N9/28
代理机构
代理人
主权项
地址
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