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经营范围
发明名称
Improvements in or relating to sound reproducing apparatus
摘要
申请公布号
GB1025246(A)
申请公布日期
1966.04.06
申请号
GB19630041523
申请日期
1963.10.21
申请人
S. KOROBUK LIMITED
发明人
DRAPER ALBERT ERIC
分类号
G11B3/20
主分类号
G11B3/20
代理机构
代理人
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