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发明名称
ELECTRIC LOW-PRESSURE MERCURY-VAPOUR DISCHARGE TUBE
摘要
申请公布号
CA461918(A)
申请公布日期
1949.12.20
申请号
CAD461918
申请日期
申请人
N.V. PHILIPS GLOEILAMPENFABRIEKEN
发明人
PIETER JOHANNES ORANJE
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