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发明名称
PRIVATE BRANCH EXCHANGE SYSTEM
摘要
申请公布号
JPS6277748(A)
申请公布日期
1987.04.09
申请号
JP19850218338
申请日期
1985.09.30
申请人
TOSHIBA CORP
发明人
ISHIDA TOMOAKI
分类号
H04M3/42
主分类号
H04M3/42
代理机构
代理人
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