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发明名称
Voice telephone ringer
摘要
申请公布号
GB9523436(D0)
申请公布日期
1996.01.17
申请号
GB19950023436
申请日期
1995.11.15
申请人
BOATENG, JACOB K
发明人
分类号
主分类号
代理机构
代理人
主权项
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