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发明名称
SUPERVISORY SYSTEM FOR ELECTRONIC EXCHANGE
摘要
申请公布号
JPH03179961(A)
申请公布日期
1991.08.05
申请号
JP19890319794
申请日期
1989.12.08
申请人
NEC CORP
发明人
TAZAKI KOZUE
分类号
H04M3/22;H04Q1/30;H04Q3/545;H04Q3/72
主分类号
H04M3/22
代理机构
代理人
主权项
地址
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