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发明名称
Multi-electrode tube circuit
摘要
申请公布号
US2943237(A)
申请公布日期
1960.06.28
申请号
US19560567789
申请日期
1956.02.27
申请人
BELL & HOWELL COMPANY
发明人
BELL NORTON W.
分类号
H01J17/48;H03M1/00
主分类号
H01J17/48
代理机构
代理人
主权项
地址
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