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发明名称
ELECTRON DISCHARGE DEVICE
摘要
申请公布号
CA320344(A)
申请公布日期
1932.03.08
申请号
CAD320344
申请日期
申请人
THE ARCTURUS RADIO TUBE COMPANY
发明人
CLARENCE A. HORN
分类号
主分类号
代理机构
代理人
主权项
地址
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