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经营范围
发明名称
KEY TELEPHONE SYSTEM
摘要
申请公布号
JPS6282850(A)
申请公布日期
1987.04.16
申请号
JP19850223943
申请日期
1985.10.08
申请人
NEC CORP
发明人
TOYOSHIMA FUMIYOSHI
分类号
H04Q3/58;H04M1/00
主分类号
H04Q3/58
代理机构
代理人
主权项
地址
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