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发明名称
COMMUNICATIONS SYSTEM
摘要
申请公布号
GB2177873(B)
申请公布日期
1989.11.22
申请号
GB19850018307
申请日期
1985.07.19
申请人
* MARCONI ELECTRONIC DEVICES LIMITED
发明人
IAN ARTHUR * DAVIDSON
分类号
H04L5/14;H04M9/02;H04N7/10;H04Q11/04
主分类号
H04L5/14
代理机构
代理人
主权项
地址
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