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发明名称
Improvements in or relating to electric space-discharge devices
摘要
申请公布号
GB665092(A)
申请公布日期
1952.01.16
申请号
GB19460024770
申请日期
1946.08.20
申请人
THE WESTERN UNION TELEGRAPH CO.
发明人
分类号
H01J17/52
主分类号
H01J17/52
代理机构
代理人
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地址
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