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经营范围
发明名称
DIGITAL KEY TELEPHONE SYSTEM
摘要
申请公布号
JPS6464492(A)
申请公布日期
1989.03.10
申请号
JP19870221274
申请日期
1987.09.04
申请人
TOSHIBA CORP
发明人
MANO HIROSHI;TSURUSAKI MASAYUKI;SANO YOSHIICHI
分类号
H04Q3/58;H04L12/40;H04M1/72
主分类号
H04Q3/58
代理机构
代理人
主权项
地址
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