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发明名称
Call signal and motor control for simplex printers
摘要
申请公布号
US1803304(A)
申请公布日期
1931.04.28
申请号
US19290389850
申请日期
1929.08.31
申请人
THE WESTERN UNION TELEGRAPH COMPANY
发明人
ROTHERMEL SAMUEL W.;HEWITT ERNEST W.
分类号
H04L12/12
主分类号
H04L12/12
代理机构
代理人
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地址
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