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经营范围
发明名称
TONE CONTROL CIRCUIT
摘要
申请公布号
CA421154(A)
申请公布日期
1944.06.27
申请号
CAD421154
申请日期
申请人
N.V. PHILIPS GLOEILAMPENFABRIEKEN;RADIO CORPORATION OF AMERICA
发明人
HENRICUS A. BROOS
分类号
主分类号
代理机构
代理人
主权项
地址
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