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发明名称
Automatic telephone system
摘要
申请公布号
US2861129(A)
申请公布日期
1958.11.18
申请号
US19560564489
申请日期
1956.02.09
申请人
NORTH ELECTRIC COMPANY
发明人
CALLENDER JACK E.
分类号
H04Q3/00
主分类号
H04Q3/00
代理机构
代理人
主权项
地址
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