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经营范围
发明名称
Appareil d'enregistrement et de reproduction de sons
摘要
申请公布号
FR953333(A)
申请公布日期
1949.12.05
申请号
FRD953333
申请日期
1947.09.02
申请人
发明人
KELLAL ABD-EL-KADER
分类号
G11B15/70
主分类号
G11B15/70
代理机构
代理人
主权项
地址
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