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发明名称
Procédé et dispositifs de production et de copie d'enregistrements de phénomènesélectriques variables
摘要
申请公布号
FR1047800(A)
申请公布日期
1953.12.16
申请号
FRD1047800
申请日期
1951.06.11
申请人
LOEWE OPTA AKTIENGESELLSCHAFT
发明人
分类号
G11B5/86
主分类号
G11B5/86
代理机构
代理人
主权项
地址
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