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发明名称
Telegraph transmitting apparatus
摘要
申请公布号
US1881757(A)
申请公布日期
1932.10.11
申请号
US19310570728
申请日期
1931.10.23
申请人
THE WESTERN UNION TELEGRAPH COMPANY
发明人
LONG JAMES W.;STEENECK ROBERT
分类号
H04L13/18;H04L19/00
主分类号
H04L13/18
代理机构
代理人
主权项
地址
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