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经营范围
发明名称
Improvements in talking machines, recording and reproducing at constant linear speed
摘要
申请公布号
GB402046(A)
申请公布日期
1933.11.23
申请号
GB19320004827
申请日期
1932.02.18
申请人
GASTON DEBREBANT
发明人
分类号
G11B19/265
主分类号
G11B19/265
代理机构
代理人
主权项
地址
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