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发明名称
LOUDSPEAKERS AND THEIR PRODUCTION
摘要
申请公布号
EP0272059(A3)
申请公布日期
1990.03.21
申请号
EP19870310904
申请日期
1987.12.11
申请人
ACOUSTIC ENERGY LIMITED
发明人
JONES, PHILIP KEITH GLEN
分类号
H04R7/02;H04R9/04;(IPC1-7):H04R9/00
主分类号
H04R7/02
代理机构
代理人
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