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经营范围
发明名称
Procédé et appareils d'enregistrement et de reproduction de vibrations mécaniques et notamment des sons, et nouveau produit industriel en résultant
摘要
申请公布号
FR41236(E)
申请公布日期
1932.12.02
申请号
FRD41236
申请日期
1931.06.10
申请人
SOCIETE D'ETUDE POUR L'EXPLOITATION DES BREVETS NUBLAT
发明人
分类号
G11B11/00
主分类号
G11B11/00
代理机构
代理人
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