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发明名称
COMMUNICATION SWITCHING SYSTEM AND METHOD
摘要
申请公布号
GB9227133(D0)
申请公布日期
1993.02.24
申请号
GB19920027133
申请日期
1992.12.31
申请人
MITEL CORPORATION
发明人
分类号
H04L12/423;H04M9/02
主分类号
H04L12/423
代理机构
代理人
主权项
地址
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