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发明名称
PRIVATE BRANCH EXCHANGE
摘要
申请公布号
JPH02202756(A)
申请公布日期
1990.08.10
申请号
JP19890023535
申请日期
1989.02.01
申请人
TOSHIBA CORP
发明人
ONO KOSEI
分类号
H04M3/22;H04M3/18
主分类号
H04M3/22
代理机构
代理人
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地址
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