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经营范围
发明名称
Procédé de reproduction optique d'enregistrements d'oscillations obtenus, de préférence, par voie mécanique, et dispositif en permettant la réalisation
摘要
申请公布号
FR796500(A)
申请公布日期
1936.04.07
申请号
FRD796500
申请日期
1935.10.18
申请人
N. V. PHILIPS' GLOEILAMPENFABRIEKEN
发明人
分类号
G11B7/085
主分类号
G11B7/085
代理机构
代理人
主权项
地址
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