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发明名称
Dispositif pour déterminer, en grandeur et en signe, une différence de fréquences
摘要
申请公布号
FR1536560(A)
申请公布日期
1968.08.16
申请号
FR19670118401
申请日期
1967.08.21
申请人
N. V. PHILIPS' GLOEILAMPENFABRIEKEN
发明人
分类号
G01R25/00;H03K5/26
主分类号
G01R25/00
代理机构
代理人
主权项
地址
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