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发明名称
Dispositif pour faciliter l'audition des disques enregistrés des machines parlantes
摘要
申请公布号
FR726855(A)
申请公布日期
1932.06.04
申请号
FRD726855
申请日期
1931.01.26
申请人
发明人
BESSET PIERRE-MICHEL
分类号
G11B3/095;G11B17/18
主分类号
G11B3/095
代理机构
代理人
主权项
地址
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