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发明名称
COMMUNICATIONS SYSTEMS
摘要
申请公布号
GB2217955(B)
申请公布日期
1992.09.02
申请号
GB19890009015
申请日期
1989.04.20
申请人
* DOWTY INFORMATION SYSTEMS LIMITED
发明人
JOHN DUNCAN * HARVEY;PHILIP * WHITEHEAD
分类号
H04B7/26;H04L12/56;H04W28/26;H04W72/04;H04W74/02;H04W74/04;H04W88/08
主分类号
H04B7/26
代理机构
代理人
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