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发明名称
Method of and apparatus for electrical recording
摘要
申请公布号
US2225247(A)
申请公布日期
1940.12.17
申请号
US19370143392
申请日期
1937.05.18
申请人
THE WESTERN UNION TELEGRAPH COMPANY
发明人
KLINE BERNARD L.;ENGLER WALTER N.
分类号
H04L21/04;H04N1/23
主分类号
H04L21/04
代理机构
代理人
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