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发明名称
DATA TRANSMISSION SYSTEMS
摘要
申请公布号
GB1567971(A)
申请公布日期
1980.05.21
申请号
GB19770003304
申请日期
1977.01.27
申请人
MARCONI CO LTD
发明人
分类号
H04L1/20;H04L12/437;(IPC1-7):H04L11/08
主分类号
H04L1/20
代理机构
代理人
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