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发明名称
CHANGEOVER SWITCH GROUP CONTROL METHOD
摘要
申请公布号
JPH10341490(A)
申请公布日期
1998.12.22
申请号
JP19970152027
申请日期
1997.06.10
申请人
OKI ELECTRIC IND CO LTD;NIPPON TELEGR & TELEPH CORP <NTT>
发明人
NABESHIMA SHINGO;HOSHIBA KUNIO;OOKASHIWA TOMOHARU
分类号
H04M3/42;H04Q3/545;H04Q3/58;H04Q11/04;(IPC1-7):H04Q11/04
主分类号
H04M3/42
代理机构
代理人
主权项
地址
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