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经营范围
发明名称
Improvements relating to magnetic recording and reproducing machines
摘要
申请公布号
GB751312(A)
申请公布日期
1956.06.27
申请号
GB19540021303
申请日期
1954.07.21
申请人
EUGEN BEYER
发明人
分类号
G11B5/004
主分类号
G11B5/004
代理机构
代理人
主权项
地址
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