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发明名称
DIGITAL SUBSCRIBER COMMUNICATION SYSTEM
摘要
申请公布号
GB2085267(A)
申请公布日期
1982.04.21
申请号
GB19810037372
申请日期
1981.04.17
申请人
SEISMOGRAPH SERVICE CORP
发明人
分类号
H04M11/06;H04J3/00;H04J3/06;H04J4/00;H04L5/14;H04L5/26;H04L7/08;H04Q11/04;(IPC1-7):H04J3/00;H04J6/00
主分类号
H04M11/06
代理机构
代理人
主权项
地址
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