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发明名称
Sende-modtagekobling.
摘要
申请公布号
DK70434(C)
申请公布日期
1950.01.02
申请号
DK19450002587
申请日期
1945.12.15
申请人
N. V. PHILIPS' GLOEILAMPENFABRIEKEN
发明人
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主分类号
代理机构
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