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发明名称
Telecommunication systems
摘要
申请公布号
US2761012(A)
申请公布日期
1956.08.28
申请号
US19530331921
申请日期
1953.01.19
申请人
AUTOMATIC TELEPHONE & ELECTRIC COMPANY LIMITED
发明人
MURRAY LAWRENCE JOHN;DAVISON ALAN;THREADGOLD RONALD;ALLUM ROBIN DEVENISH
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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