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发明名称
DIGITAL RING BACK TONE GENERATING CIRCUIT
摘要
申请公布号
KR0165052(B1)
申请公布日期
1999.02.01
申请号
KR19940019503
申请日期
1994.08.08
申请人
LG INFORMATION & COMMUNICATIONS LTD.
发明人
CHO, HYUN-JOO
分类号
H04M1/02;(IPC1-7):H04M1/02
主分类号
H04M1/02
代理机构
代理人
主权项
地址
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