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经营范围
发明名称
DATA TRANSMISSION SYSTEMS
摘要
申请公布号
GB1522015(A)
申请公布日期
1978.08.23
申请号
GB19750039064
申请日期
1975.09.24
申请人
SIEMENS AG
发明人
分类号
H04L1/18;(IPC1-7):H04L1/16;H04L7/10
主分类号
H04L1/18
代理机构
代理人
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地址
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