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发明名称
摘要
申请公布号
FR2221884(B1)
申请公布日期
1977.09.16
申请号
FR19740008229
申请日期
1974.03.11
申请人
SIEMENS AG
发明人
分类号
H04L5/22;H04L7/00;(IPC1-7):H04L7/06
主分类号
H04L5/22
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代理人
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