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发明名称
RELAY EXCHANGE
摘要
申请公布号
JPH0530223(A)
申请公布日期
1993.02.05
申请号
JP19910089194
申请日期
1991.03.29
申请人
TOSHIBA CORP
发明人
KOSAKA TORU;AYAME SHIYOUGO
分类号
H04M7/00;H04Q3/58
主分类号
H04M7/00
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代理人
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