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经营范围
发明名称
ON HOLD CALL WAITING DISPLAY METHOD AND APPARATUS
摘要
申请公布号
EP0927484(B1)
申请公布日期
2005.07.06
申请号
EP19980909258
申请日期
1998.03.12
申请人
NORTEL NETWORKS LIMITED
发明人
YEE, BRUCE, WILLIAM;BLEILE, LEONARD, GEORGE
分类号
H04M3/428;H04M1/57;(IPC1-7):H04M1/57;H04M3/42
主分类号
H04M3/428
代理机构
代理人
主权项
地址
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