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发明名称
ELECTRIC RESISTANCES
摘要
申请公布号
CA475909(A)
申请公布日期
1951.08.07
申请号
CAD475909
申请日期
申请人
N.V. PHILIPS GLOEILAMPENFABRIEKEN
发明人
EVERT JOHANNES WILLEM VERWEY
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主分类号
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