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经营范围
发明名称
DIGITAL SWITCHING SYSTEM
摘要
申请公布号
GB2143404(A)
申请公布日期
1985.02.06
申请号
GB19840013941
申请日期
1984.05.31
申请人
* NIPPON TELEGRAPH & TELEPHONE PUBLIC CORPORATION
发明人
YASHUHARU * KOSUGE;NORIHARU * MIYAHO
分类号
H04Q11/04;H04L12/64;(IPC1-7):H04M11/06;H04L11/20
主分类号
H04Q11/04
代理机构
代理人
主权项
地址
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