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发明名称
EXTENTION USING CONDITION DISPLAY DEVICE FOR KEY TELEPHONE SYSTEM
摘要
申请公布号
JPH0220194(A)
申请公布日期
1990.01.23
申请号
JP19880168802
申请日期
1988.07.08
申请人
NEC CORP
发明人
UEJIMA YOSHIYUKI
分类号
H04Q3/58
主分类号
H04Q3/58
代理机构
代理人
主权项
地址
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