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发明名称
Electron discharge device and method of manufacture
摘要
申请公布号
US1871352(A)
申请公布日期
1932.08.09
申请号
US19290340342
申请日期
1929.02.15
申请人
WESTINGHOUSE LAMP COMPANY
发明人
WIDELL EMIL GIDEON
分类号
H01J9/04
主分类号
H01J9/04
代理机构
代理人
主权项
地址
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