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发明名称
Duplex triode vacuum tube
摘要
申请公布号
US1857594(A)
申请公布日期
1932.05.10
申请号
US19240734603
申请日期
1924.08.28
申请人
WESTINGHOUSE ELECTRIC & MANUFACTURING COMPANY
发明人
KINTNER SAMUEL M.
分类号
H01J21/20
主分类号
H01J21/20
代理机构
代理人
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地址
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