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发明名称
Apparatus, System and control method for processing of multi call bell
摘要
申请公布号
KR100837284(B1)
申请公布日期
2008.06.11
申请号
KR20060084931
申请日期
2006.09.05
申请人
发明人
分类号
H04M3/42
主分类号
H04M3/42
代理机构
代理人
主权项
地址
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