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发明名称
Electron discharge device
摘要
申请公布号
US1958953(A)
申请公布日期
1934.05.15
申请号
US19320646970
申请日期
1932.12.13
申请人
ROGERS RADIO TUBES, LIMITED
发明人
PARKER HENRY W.
分类号
H01J5/08
主分类号
H01J5/08
代理机构
代理人
主权项
地址
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