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发明名称
BEAM CENTERING DEVICES FOR CATHODE RAY TUBES
摘要
申请公布号
CA479460(A)
申请公布日期
1951.12.18
申请号
CAD479460
申请日期
申请人
CANADIAN GENERAL ELECTRIC COMPANY
发明人
RICHARD B. GETHMANN
分类号
主分类号
代理机构
代理人
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