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发明名称
Improvements in or relating to devices comprising ionic discharge tubes
摘要
申请公布号
GB473536(A)
申请公布日期
1937.10.14
申请号
GB19370017871
申请日期
1937.06.26
申请人
N. V. PHILIPS' GLOEILAMPENFABRIEKEN
发明人
分类号
H01J17/58
主分类号
H01J17/58
代理机构
代理人
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