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发明名称
ELECTRONIC EXCHANGE SYSTEM
摘要
申请公布号
JPH02256392(A)
申请公布日期
1990.10.17
申请号
JP19890077042
申请日期
1989.03.29
申请人
TOSHIBA CORP
发明人
ASADA HIROSHI
分类号
H04M3/22;H04Q3/545;H04Q3/58
主分类号
H04M3/22
代理机构
代理人
主权项
地址
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