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经营范围
发明名称
Signal transmission systems
摘要
申请公布号
GB2067750(A)
申请公布日期
1981.07.30
申请号
GB19810000578
申请日期
1981.01.09
申请人
NATIONAL RESEARCH DEVELOPMENT CORP
发明人
分类号
H04B10/2581;(IPC1-7):H04B9/00
主分类号
H04B10/2581
代理机构
代理人
主权项
地址
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