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发明名称
KEY TELEPHONE SYSTEM
摘要
申请公布号
JPS6478598(A)
申请公布日期
1989.03.24
申请号
JP19870236024
申请日期
1987.09.19
申请人
TOSHIBA CORP
发明人
SUMI KAZUHIRO
分类号
H04Q3/58
主分类号
H04Q3/58
代理机构
代理人
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地址
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