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发明名称
Automatic telephone system
摘要
申请公布号
US2402232(A)
申请公布日期
1946.06.18
申请号
US19430478245
申请日期
1943.03.06
申请人
AUTOMATIC ELECTRIC LABORATORIES, INC.
发明人
BAKER GEORGE THOMAS
分类号
H04Q1/50;H04Q3/00
主分类号
H04Q1/50
代理机构
代理人
主权项
地址
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