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发明名称
Focusing electrode
摘要
申请公布号
US2468136(A)
申请公布日期
1949.04.26
申请号
US19450620147
申请日期
1945.10.03
申请人
FEDERAL TELEPHONE AND RADIO CORPORATION
发明人
TAYLOR WARREN G.
分类号
H01J29/48;H01J29/62
主分类号
H01J29/48
代理机构
代理人
主权项
地址
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