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发明名称
Computer controlled telephone answering system
摘要
申请公布号
USRE30903(E)
申请公布日期
1982.04.13
申请号
US19780952067
申请日期
1978.10.17
申请人
发明人
分类号
H04M3/51
主分类号
H04M3/51
代理机构
代理人
主权项
地址
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