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发明名称
Digital telephony
摘要
申请公布号
GB9418747(D0)
申请公布日期
1994.11.02
申请号
GB19940018747
申请日期
1994.09.16
申请人
IONICA L3 LIMITED
发明人
分类号
H04J3/00;H04B7/24;H04J3/16;H04W74/08
主分类号
H04J3/00
代理机构
代理人
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