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发明名称
Improvements in or relating to electric gas- or vapour-filled arc discharge tubes
摘要
申请公布号
GB351894(A)
申请公布日期
1931.07.02
申请号
GB19300035874
申请日期
1930.11.28
申请人
N. V. PHILIPS' GLOEILAMPENFABRIEKEN
发明人
分类号
H01J61/72
主分类号
H01J61/72
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