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发明名称
Improvement in sound re-recording method and system
摘要
申请公布号
GB548557(A)
申请公布日期
1942.10.15
申请号
GB19400018220
申请日期
1940.12.30
申请人
RADIO CORPORATION OF AMERICA
发明人
分类号
G03B31/00
主分类号
G03B31/00
代理机构
代理人
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