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发明名称
Improvements in or relating to telephone line concentrator systems
摘要
申请公布号
GB970160(A)
申请公布日期
1964.09.16
申请号
GB19600042101
申请日期
1960.12.07
申请人
WESTERN ELECTRIC COMPANY,INCORPORATED
发明人
分类号
H04Q3/00;H04Q3/52
主分类号
H04Q3/00
代理机构
代理人
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地址
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