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发明名称
MEJORAS INTRODUCIDAS EN LAS COMBINACIONES DE DOS O MáS SISTEMAS DE GOBIERNO DE ALTA FRECUENCIA
摘要
申请公布号
ES167845(A1)
申请公布日期
1947.11.01
申请号
ES19450001678
申请日期
1944.10.24
申请人
PHILIPS'GLOEILAMPENFABRIEKEN, N. V.
发明人
分类号
(IPC1-7):G01;H03;H04
主分类号
(IPC1-7):G01
代理机构
代理人
主权项
地址
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