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发明名称
Vacuum tube
摘要
申请公布号
US2141256(A)
申请公布日期
1938.12.27
申请号
US19360083947
申请日期
1936.06.06
申请人
FEDERAL TELEGRAPH COMPANY
发明人
SUYDAM CLINTON H.
分类号
H01J5/32;H01J5/50
主分类号
H01J5/32
代理机构
代理人
主权项
地址
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