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发明名称
EXTENSION TRANSFER SYSTEM IN PRIVATE BRANCH OF EXCHANGE
摘要
申请公布号
JPH03132147(A)
申请公布日期
1991.06.05
申请号
JP19890269792
申请日期
1989.10.17
申请人
NEC CORP
发明人
KIMURA YOSHINORI
分类号
H04M3/54
主分类号
H04M3/54
代理机构
代理人
主权项
地址
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