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发明名称
Electron discharge device
摘要
申请公布号
US2439173(A)
申请公布日期
1948.04.06
申请号
US19430498271
申请日期
1943.08.12
申请人
RADIO CORPORATION
发明人
LANGMUIR DAVID B.
分类号
H01J21/06
主分类号
H01J21/06
代理机构
代理人
主权项
地址
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