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经营范围
发明名称
PRIVATE BRANCH OF EXCHANGE
摘要
申请公布号
JPH0332145(A)
申请公布日期
1991.02.12
申请号
JP19890166051
申请日期
1989.06.28
申请人
MITSUBISHI ELECTRIC CORP
发明人
UCHIUMI YOSHINORI;ITO SHUJI
分类号
H04M3/42;H04Q3/58
主分类号
H04M3/42
代理机构
代理人
主权项
地址
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