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发明名称
Fremgangsmåde til fremstilling af en getter indeholdende kalciumfluorid til elektriske glødelamper.
摘要
申请公布号
DK70714(C)
申请公布日期
1950.03.13
申请号
DK19470003952
申请日期
1947.10.24
申请人
N. V. PHILIPS' GLOEILAMPENFABRIEKEN
发明人
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主分类号
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