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发明名称
Line circuit
摘要
申请公布号
US2796465(A)
申请公布日期
1957.06.18
申请号
US19540427965
申请日期
1954.05.06
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
REENSTRA WILLARD A.
分类号
H04Q3/58
主分类号
H04Q3/58
代理机构
代理人
主权项
地址
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