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经营范围
发明名称
Method for continuous call maintaining in wireless private exchange
摘要
申请公布号
KR100617581(B1)
申请公布日期
2006.09.01
申请号
KR19990038106
申请日期
1999.09.08
申请人
发明人
分类号
H04Q3/62
主分类号
H04Q3/62
代理机构
代理人
主权项
地址
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