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经营范围
发明名称
Dispositif pour la reproduction et l'enregistrement des sons.
摘要
申请公布号
CH142500(A)
申请公布日期
1930.09.30
申请号
CHD142500
申请日期
1929.08.05
申请人
DIEUX,JEAN
发明人
DIEUX,JEAN
分类号
主分类号
代理机构
代理人
主权项
地址
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