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发明名称
Improvements in or relating to telephone intercepting trunk circuits
摘要
申请公布号
GB1012053(A)
申请公布日期
1965.12.08
申请号
GB19620029685
申请日期
1962.08.02
申请人
WESTERN ELECTRIC COMPANY, INCORPORATED
发明人
分类号
H04M3/487;H04M3/54
主分类号
H04M3/487
代理机构
代理人
主权项
地址
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