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发明名称
Disque d'aluminium garni d'une feuille pour la gravure d'enregistrements sonores, destiné à la production par la voie galvanique de matrices pour l'impression de disques phonographiques
摘要
申请公布号
FR888542(A)
申请公布日期
1943.12.15
申请号
FRD888542
申请日期
1942.11.24
申请人
CARL LINDSTROM AKTIENGESELLSCHAFT
发明人
分类号
G11B3/70
主分类号
G11B3/70
代理机构
代理人
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