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发明名称
ELECTRON DISCHARGE TUBE
摘要
申请公布号
CA320338(A)
申请公布日期
1932.03.08
申请号
CAD320338
申请日期
申请人
THE ARCTURUS RADIO TUBE COMPANY
发明人
SAMUEL RUBEN
分类号
主分类号
代理机构
代理人
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