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发明名称
TIME DIVISION EXCHANGE FOR CARRYING OUT A LOOP-BACK TEST
摘要
申请公布号
EP0171803(B1)
申请公布日期
1992.12.16
申请号
EP19850110205
申请日期
1985.08.14
申请人
FUJITSU LIMITED
发明人
KAWAGUCHI, TOMOHIRO
分类号
H04M3/26;H04J3/06;H04M3/24;H04Q11/04
主分类号
H04M3/26
代理机构
代理人
主权项
地址
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