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经营范围
发明名称
MEJORAS RELATIVAS A AMPLIFICADORES
摘要
申请公布号
ES237023(A1)
申请公布日期
1958.05.16
申请号
ES19230002370
申请日期
1957.08.07
申请人
STANDARD ELECTRICA, S.A.
发明人
分类号
(IPC1-7):H03
主分类号
(IPC1-7):H03
代理机构
代理人
主权项
地址
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