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摘要
申请公布号
US2390672(A)
申请公布日期
1945.12.11
申请号
US19440533023
申请日期
1944.04.27
申请人
TELETYPE CORPORATION
发明人
WAHLSTRAND HAROLD A.
分类号
H04L12/06
主分类号
H04L12/06
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