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发明名称
Keying system
摘要
申请公布号
US2086899(A)
申请公布日期
1937.07.13
申请号
US19350004238
申请日期
1935.01.31
申请人
RADIO CORPORATION OF AMERICA
发明人
CURRIER STUART E.;BALLENTINE EDWIN C.
分类号
H04L27/04
主分类号
H04L27/04
代理机构
代理人
主权项
地址
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