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发明名称
EXTENSION GENERAL BROADCASTING SYSTEM OF PRIVATE BRANCH EXCHANGE
摘要
申请公布号
JPH02188051(A)
申请公布日期
1990.07.24
申请号
JP19890008326
申请日期
1989.01.17
申请人
TOSHIBA CORP
发明人
HASEGAWA IWAO
分类号
H04M3/42
主分类号
H04M3/42
代理机构
代理人
主权项
地址
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