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经营范围
发明名称
SUBSCRIBER SERVICE SYSTEM
摘要
申请公布号
JPH0253362(A)
申请公布日期
1990.02.22
申请号
JP19880205289
申请日期
1988.08.17
申请人
NEC CORP
发明人
MOTOIKE ISAO
分类号
H04M3/42
主分类号
H04M3/42
代理机构
代理人
主权项
地址
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