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发明名称
Perfectionnements aux circuits de filtrage
摘要
申请公布号
FR787240(A)
申请公布日期
1935.09.19
申请号
FRD787240
申请日期
1934.06.14
申请人
SOCIETE FRANCAISE RADIO-ELECTRIQUE
发明人
分类号
H03H7/075
主分类号
H03H7/075
代理机构
代理人
主权项
地址
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