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发明名称
Tip-off apparatus for electron tubes
摘要
申请公布号
US2934860(A)
申请公布日期
1960.05.03
申请号
US19550491459
申请日期
1955.03.01
申请人
RADIO CORPORATION OF AMERICA
发明人
GALLUP JOHN L.
分类号
H01J9/40
主分类号
H01J9/40
代理机构
代理人
主权项
地址
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