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经营范围
发明名称
Voice band call routing
摘要
申请公布号
GB2316267(A)
申请公布日期
1998.02.18
申请号
GB19970015939
申请日期
1997.07.29
申请人
* GPT LIMITED
发明人
NICHOLAS RICHARD * WINCH
分类号
H04M3/42;H04M3/436;H04M3/533;H04Q3/00;H04Q3/72;(IPC1-7):H04M3/42
主分类号
H04M3/42
代理机构
代理人
主权项
地址
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