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发明名称
Automatic telephone system
摘要
申请公布号
US2890282(A)
申请公布日期
1959.06.09
申请号
US19530334197
申请日期
1953.01.30
申请人
GENERAL DYNAMICS CORPORATION
发明人
KESSLER FRANK
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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