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发明名称
ELECTRON DISCHARGE DEVICE
摘要
申请公布号
CA453057(A)
申请公布日期
1948.11.30
申请号
CAD453057
申请日期
申请人
BELL TELEPHONE LABORATORIES;WESTERN ELECTRIC COMPANY, INCORPORATED
发明人
PAUL LEON HARTMEN
分类号
主分类号
代理机构
代理人
主权项
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