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经营范围
发明名称
Improvements in or relating to phonograph record players
摘要
申请公布号
GB746116(A)
申请公布日期
1956.03.07
申请号
GB19540003741
申请日期
1954.02.09
申请人
NORBERT KARL ACKER
发明人
分类号
G11B17/24
主分类号
G11B17/24
代理机构
代理人
主权项
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