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发明名称
Keyboard transmitter
摘要
申请公布号
US1975367(A)
申请公布日期
1934.10.02
申请号
US19320631294
申请日期
1932.08.31
申请人
THE WESTERN UNION TELEGRAPH COMPANY
发明人
MAUS FRANK J.;FRANKLIN LAWRENCE W.
分类号
H04L17/06
主分类号
H04L17/06
代理机构
代理人
主权项
地址
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