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发明名称
Procédé d'amélioration de la reproduction sonore photoélectrique des phonogrammes avec tracé de phonogrammation discontinue
摘要
申请公布号
FR783285(A)
申请公布日期
1935.07.10
申请号
FRD783285
申请日期
1934.12.26
申请人
发明人
CRUDO FERNANDO
分类号
G11B25/02
主分类号
G11B25/02
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代理人
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