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发明名称
MIT TRANSISTOREN BESTUECKTER NF-VERSTAERKER OHNE AUSGANGSTRANSFORMATOR.
摘要
申请公布号
DE1758170(U)
申请公布日期
1957.12.19
申请号
DE195700N7975U
申请日期
1957.10.18
申请人
N. V. PHILIPS' GLOEILAMPENFABRIEKEN
发明人
分类号
主分类号
代理机构
代理人
主权项
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