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发明名称
COMPENSATION OF HEARING
摘要
申请公布号
GB2184629(B)
申请公布日期
1989.11.08
申请号
GB19860029354
申请日期
1986.12.09
申请人
COLIN DAVID * RICKSON
发明人
COLIN DAVID * RICKSON
分类号
H04R25/00;(IPC1-7):H04R25/00
主分类号
H04R25/00
代理机构
代理人
主权项
地址
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