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11.发明公开SYSTEM AND METHOD OF INTERACTIVE AREA ADVERTISEMENT USING MULTICAST TRANSMITTING 审中-公开系统和方法的互动广告区域中使用多播广播
公开(公告)号：EP2089843A4
公开(公告)日：2011-06-29
申请号：EP07833361
申请日：2007-10-16
Applicant: KOREA ELECTRONICS TELECOMM
Inventor： LEE SANG HYEUN , OH SEUNG HUN , LEE BYUNG TAK , LEE SUNG YONG , SONG HO YOUNG , KIM BONG TAE
IPC: G06Q30/00
CPC classification number: G06Q30/02 , G06Q30/0241 , G06Q30/0273
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