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发明名称
Public address amplifier
摘要
申请公布号
US4896360(A)
申请公布日期
1990.01.23
申请号
US19880199415
申请日期
1988.05.27
申请人
KNIGHT, ROBERT S.
发明人
KNIGHT, ROBERT S.
分类号
H04R27/04
主分类号
H04R27/04
代理机构
代理人
主权项
地址
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