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发明名称
Double grid tube
摘要
申请公布号
US1853687(A)
申请公布日期
1932.04.12
申请号
US19270190665
申请日期
1927.05.12
申请人
WESTINGHOUSE ELECTRIC & MANUFACTURING COMPANY
发明人
KIMMELL WILLIAM J.
分类号
H01J19/28
主分类号
H01J19/28
代理机构
代理人
主权项
地址
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