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发明名称
SYSTEM AND METHOD FOR PLAYING LEARNING CONTENTS
摘要
申请公布号
KR100953933(B1)
申请公布日期
2010.04.22
申请号
KR20080064213
申请日期
2008.07.03
申请人
发明人
分类号
G06Q50/20;G06F21/12;G06F21/31;G06F21/44;G06F21/60;G06Q50/10;G08B21/18;H04L9/08;H04N21/6336;H04W12/08
主分类号
G06Q50/20
代理机构
代理人
主权项
地址
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