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经营范围
发明名称
ELECTRONIC EXCHANGE SYSTEM
摘要
申请公布号
JPH02196555(A)
申请公布日期
1990.08.03
申请号
JP19890017181
申请日期
1989.01.26
申请人
NEC CORP
发明人
SOBASHIMA KIYOOMI
分类号
H04M3/22;H04M3/00
主分类号
H04M3/22
代理机构
代理人
主权项
地址
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