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经营范围
发明名称
SUBSCRIBER ADDITIONAL SERVICE SYSTEM
摘要
申请公布号
JPS6481563(A)
申请公布日期
1989.03.27
申请号
JP19870237417
申请日期
1987.09.24
申请人
NEC CORP
发明人
ABE SHOICHI
分类号
H04M11/00
主分类号
H04M11/00
代理机构
代理人
主权项
地址
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