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发明名称
Multichannel telegraph system
摘要
申请公布号
US2205406(A)
申请公布日期
1940.06.25
申请号
US19370153748
申请日期
1937.07.15
申请人
THE WESTERN UNION TELEGRAPH COMPANY
发明人
JR. PHILO HOLCOMB,
分类号
H04J3/16;H04L5/22
主分类号
H04J3/16
代理机构
代理人
主权项
地址
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