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发明名称
Устройство для записи и воспроизведения звуков
摘要
申请公布号
SU38973(A1)
申请公布日期
1934.09.30
申请号
SU19310090478
申请日期
1931.06.21
申请人
ELEKTRICHESKAYA PROIZVODSTVENNAYA KOMPANIYA VESTINGAUZ
发明人
KLINTON RICHARD GANN
分类号
G11B7/12
主分类号
G11B7/12
代理机构
代理人
主权项
地址
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