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发明名称
Improvements in and relating to electric discharge devices
摘要
申请公布号
GB690733(A)
申请公布日期
1953.04.29
申请号
GB19490003984
申请日期
1949.02.14
申请人
THE MULLARD RADIO VALVE COMPANY LIMITED;HAROLD HUTCHINSON
发明人
分类号
H01J61/33
主分类号
H01J61/33
代理机构
代理人
主权项
地址
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