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发明名称
DATA TRANSMISSION SYSTEM
摘要
申请公布号
GB1552529(A)
申请公布日期
1979.09.12
申请号
GB19770037424
申请日期
1977.09.07
申请人
GRETAG AG
发明人
分类号
H04J3/07;H04J3/06;H04J3/12;H04L7/00;(IPC1-7):H04L7/10
主分类号
H04J3/07
代理机构
代理人
主权项
地址
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