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发明名称
Improvements in magnetic sound-recorders
摘要
申请公布号
GB678067(A)
申请公布日期
1952.08.27
申请号
GB19500009477
申请日期
1950.04.18
申请人
ATELIERS DE CONSTRUCTIONS ELECTRIQUES DE CHARLEROI
发明人
分类号
G11B15/22
主分类号
G11B15/22
代理机构
代理人
主权项
地址
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