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发明名称
ELECTRONIC EXCHANGE
摘要
申请公布号
JPH04137893(A)
申请公布日期
1992.05.12
申请号
JP19900256964
申请日期
1990.09.28
申请人
TOSHIBA CORP
发明人
ITO TAKAHARU
分类号
H04Q3/545
主分类号
H04Q3/545
代理机构
代理人
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