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发明名称
摘要
申请公布号
FR2323274(B1)
申请公布日期
1981.04.30
申请号
FR19760026849
申请日期
1976.09.07
申请人
NCR CORP
发明人
分类号
H04L27/233;H04B7/216;(IPC1-7):H04L9/02;H04B1/16;H04L27/18
主分类号
H04L27/233
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