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经营范围
发明名称
DIGITAL COMMUNICATIONS SYSTEM
摘要
申请公布号
GB2100554(B)
申请公布日期
1985.07.24
申请号
GB19820017313
申请日期
1982.06.15
申请人
GENERAL SIGNAL CORP
发明人
分类号
B61L7/08;H04L1/08;(IPC1-7):H04L1/00
主分类号
B61L7/08
代理机构
代理人
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