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发明名称
KEY TELEPHONE SYSTEM
摘要
申请公布号
JPS6386693(A)
申请公布日期
1988.04.18
申请号
JP19860229522
申请日期
1986.09.30
申请人
NEC CORP
发明人
YABATA RYOICHI
分类号
H04M3/44;H04Q3/58
主分类号
H04M3/44
代理机构
代理人
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地址
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