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发明名称
EARPHONE APPARATUS
摘要
申请公布号
GB9306667(D0)
申请公布日期
1993.05.26
申请号
GB19930006667
申请日期
1993.03.31
申请人
POLURAL LIMITED
发明人
分类号
G10K11/178;H04R1/10
主分类号
G10K11/178
代理机构
代理人
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