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发明名称
METHOD FOR SUPPLYING MULTI-BELL SERVICE USING IMPULSE RATIO
摘要
申请公布号
KR20010100243(A)
申请公布日期
2001.11.14
申请号
KR20000015302
申请日期
2000.03.25
申请人
HANARO TELECOM., INC.
发明人
PARK, NAM GI
分类号
(IPC1-7):H04M3/42
主分类号
(IPC1-7):H04M3/42
代理机构
代理人
主权项
地址
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