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发明名称
Line circuit with two-way transfer
摘要
申请公布号
US3041405(A)
申请公布日期
1962.06.26
申请号
US19580779011
申请日期
1958.12.08
申请人
AUTOMATIC ELECTRIC LABORATORIES, INC.
发明人
LOMAX CLARENCE E.
分类号
H04M3/54
主分类号
H04M3/54
代理机构
代理人
主权项
地址
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