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KR20050086049 | KR20050086049 | KR20050086049 |
15/09/2005 | 15/09/2005 | 15/09/2005 |
KR100561686 B1 09/03/2006 | KR100561686 B1 09/03/2006 | KR100561686 B1 09/03/2006 |
VIDEO TELEPHONY SERVICE METHOD IN MOBILE COMMUNICATION NETWORK | VIDEO TELEPHONY SERVICE METHOD IN MOBILE COMMUNICATION NETWORK | VIDEO TELEPHONY SERVICE METHOD IN MOBILE COMMUNICATION NETWORK |
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KOREA (REPUBLIC OF) | KOREA (REPUBLIC OF) | KOREA (REPUBLIC OF) |
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KR20040084766 | KR20040084766 | KR20040084766 |
SK TELECOM CO LTD [KR] | SK TELECOM CO LTD [KR] | SK TELECOM CO LTD [KR] |
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