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发明名称
Improvements in the stereophonic recording and reproduction of sound vibrations
摘要
申请公布号
GB506141(A)
申请公布日期
1939.05.23
申请号
GB19380028590
申请日期
1938.10.01
申请人
N. V. PHILIPS' GLOEILAMPENFABRIEKEN
发明人
分类号
G11B7/00;H03F3/68
主分类号
G11B7/00
代理机构
代理人
主权项
地址
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