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发明名称
Vacuum tube
摘要
申请公布号
US1840121(A)
申请公布日期
1932.01.05
申请号
US19260110547
申请日期
1926.05.20
申请人
WESTINGHOUSE ELECTRIC & MANUFACTURING COMPANY
发明人
MCCULLOCH LEON
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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