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发明名称
A CALL MONITOR ARRANGEMENT
摘要
申请公布号
GB2219173(A)
申请公布日期
1989.11.29
申请号
GB19880011791
申请日期
1988.05.18
申请人
* GEC PLESSEY TELECOMMUNICATIONS LIMITED
发明人
S J * MOORE
分类号
H04M3/22;H04L12/26;H04Q11/04
主分类号
H04M3/22
代理机构
代理人
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