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发明名称
METHOD FOR DIFFERENCE ACCOUNTING OF VOICE/VIDEO CALL IN VIDEO TELEPHONY SYSTEM
摘要
申请公布号
KR20050070347(A)
申请公布日期
2005.07.07
申请号
KR20030099767
申请日期
2003.12.30
申请人
KT CORPORATION
发明人
YUN, HYE JEONG;BAE, HAN SOO;CHOI, WON SEOCK;JEON, YA ME;JANG, SE HUN;JIN, YOUNG GYU;LEE, SOONG BOK
分类号
H04M15/00;(IPC1-7):H04M15/00
主分类号
H04M15/00
代理机构
代理人
主权项
地址
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