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经营范围
发明名称
KEY TELEPHONE SYSTEM WITH CANCEL FUNCTION
摘要
申请公布号
JPH03277047(A)
申请公布日期
1991.12.09
申请号
JP19900078141
申请日期
1990.03.27
申请人
NEC CORP
发明人
IKOMA YUJI
分类号
H04M1/56
主分类号
H04M1/56
代理机构
代理人
主权项
地址
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