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发明名称
Machine à dicter par voie magnétique à exploration hélicoïdale
摘要
申请公布号
FR1010022(A)
申请公布日期
1952.06.06
申请号
FRD1010022
申请日期
1948.07.22
申请人
ATELIERS DE CONSTRUCTIONS ELECTRIQUES DE CHARLEROI
发明人
分类号
G11B21/02
主分类号
G11B21/02
代理机构
代理人
主权项
地址
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