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发明名称
SIGNAL MATRIXING FOR DIRECTIONAL REPRODUCTION OF SOUND
摘要
申请公布号
GB1411994(A)
申请公布日期
1975.10.29
申请号
GB19720045558
申请日期
1972.10.03
申请人
COOPER D H
发明人
分类号
G11B20/00;H04S3/00;H04S3/02;(IPC1-7):H04H5/00
主分类号
G11B20/00
代理机构
代理人
主权项
地址
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