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经营范围
发明名称
ELECTRONIC PRIVATE BRANCH EXCHANGE
摘要
申请公布号
JPH02137464(A)
申请公布日期
1990.05.25
申请号
JP19880291273
申请日期
1988.11.18
申请人
NEC CORP
发明人
YAMAGUCHI TADASHI
分类号
H04N1/32;H04M11/00
主分类号
H04N1/32
代理机构
代理人
主权项
地址
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