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发明名称
CHANNEL CONCENTRATOR
摘要
申请公布号
JPS6223298(A)
申请公布日期
1987.01.31
申请号
JP19850163360
申请日期
1985.07.23
申请人
NEC CORP;NIPPON TELEGR & TELEPH CORP <NTT>
发明人
GOTO AKIRA;KOGURE KOJI
分类号
H04Q3/60
主分类号
H04Q3/60
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代理人
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