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经营范围
发明名称
DATA TRANSMISSION
摘要
申请公布号
GB8704525(D0)
申请公布日期
1987.04.01
申请号
GB19870004525
申请日期
1987.02.26
申请人
NATIONAL RESEARCH DEVELOPMENT CORPORATION
发明人
分类号
H04B1/68
主分类号
H04B1/68
代理机构
代理人
主权项
地址
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