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发明名称
Produit pelliculaire destiné à l'enregistrement magnétique des sons
摘要
申请公布号
FR994434(A)
申请公布日期
1951.11.16
申请号
FRD994434
申请日期
1949.07.01
申请人
LA CELLOPHANE
发明人
分类号
G11B5/702
主分类号
G11B5/702
代理机构
代理人
主权项
地址
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