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经营范围
发明名称
Sélectivité par opposition en basse fréquence
摘要
申请公布号
FR885214(A)
申请公布日期
1943.09.08
申请号
FRD885214
申请日期
1942.08.18
申请人
发明人
GERARD HENRI-CHARLES
分类号
H04B1/12
主分类号
H04B1/12
代理机构
代理人
主权项
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