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发明名称
Filtres de bande de fréquences
摘要
申请公布号
FR56377(E)
申请公布日期
1952.09.23
申请号
FRD56377
申请日期
1946.08.27
申请人
发明人
MARIE GEORGES-ROBERT-PIERR
分类号
H01P1/202
主分类号
H01P1/202
代理机构
代理人
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