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发明名称
RINGFOERMIGES DATENUEBERTRAGUNGSSYSTEM
摘要
申请公布号
DE2828707(A1)
申请公布日期
1979.02.22
申请号
DE19782828707
申请日期
1978.06.30
申请人
INTERNATIONAL STANDARD ELECTRIC CORP.
发明人
CHOWN,MARTIN;GRAHAM FARRINGTON,JEFFREY
分类号
H04L12/433;(IPC1-7):H04L25/00;H04L5/22
主分类号
H04L12/433
代理机构
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