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发明名称
Telegraph system
摘要
申请公布号
US2082575(A)
申请公布日期
1937.06.01
申请号
US19340732650
申请日期
1934.06.27
申请人
ASSOCIATED TELEPHONE AND TELEGRAPH COMPANY
发明人
HARRISON HARRY HUGHES
分类号
H04L25/49
主分类号
H04L25/49
代理机构
代理人
主权项
地址
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