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发明名称
TELEPHONE CONFERENCE CONNECTION SYSTEM
摘要
申请公布号
JPS6412752(A)
申请公布日期
1989.01.17
申请号
JP19870170098
申请日期
1987.07.07
申请人
FUJITSU LTD
发明人
KOKUBO YUJI
分类号
H04M3/56
主分类号
H04M3/56
代理机构
代理人
主权项
地址
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