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经营范围
发明名称
Improvements in or relating to methods of and apparatus for reproducing or re-recording recorded sound
摘要
申请公布号
GB484038(A)
申请公布日期
1938.04.29
申请号
GB19370014534
申请日期
1937.05.25
申请人
BRITISH OZAPHANE, LIMITED
发明人
分类号
G11B7/00
主分类号
G11B7/00
代理机构
代理人
主权项
地址
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