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发明名称
A Karaoke system using the portable digital music player
摘要
申请公布号
KR100717324(B1)
申请公布日期
2007.05.15
申请号
KR20050103724
申请日期
2005.11.01
申请人
发明人
分类号
G06Q50/10;G06F3/06
主分类号
G06Q50/10
代理机构
代理人
主权项
地址
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