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经营范围
发明名称
PRIVATE BRANCH EXCHANGE
摘要
申请公布号
JPH02233092(A)
申请公布日期
1990.09.14
申请号
JP19890053483
申请日期
1989.03.06
申请人
TOSHIBA CORP
发明人
TAKEYA HIROYUKI
分类号
H04B3/20;H04Q3/58
主分类号
H04B3/20
代理机构
代理人
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