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发明名称
Electron discharge device
摘要
申请公布号
US1915959(A)
申请公布日期
1933.06.27
申请号
US19290351999
申请日期
1929.04.02
申请人
RAYTHEON, INC.
发明人
SMITH CHARLES G.
分类号
H01J21/02
主分类号
H01J21/02
代理机构
代理人
主权项
地址
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