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发明名称
Kobling til forstærkning af en elektrisk spænding eller strøm.
摘要
申请公布号
DK79834(C)
申请公布日期
1955.09.12
申请号
DK19500002793
申请日期
1950.08.26
申请人
N. V. PHILIPS' GLOEILAMPENFABRIEKEN
发明人
分类号
主分类号
代理机构
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