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经营范围
发明名称
Listening apparatus
摘要
申请公布号
GB0617704(D0)
申请公布日期
2006.10.18
申请号
GB20060017704
申请日期
2006.09.08
申请人
H K INNOVATIONS LIMITED
发明人
分类号
H04R5/033
主分类号
H04R5/033
代理机构
代理人
主权项
地址
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