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经营范围
发明名称
Differenzverstaerker
摘要
申请公布号
DE1154520(B)
申请公布日期
1963.09.19
申请号
DE1961N020630
申请日期
1961.10.04
申请人
N. V. PHILIPS' GLOEILAMPENFABRIEKEN
发明人
WALD LUIS
分类号
H03F3/45
主分类号
H03F3/45
代理机构
代理人
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