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经营范围
发明名称
ELECTRONIC CONFERENCE SYSTEM
摘要
申请公布号
JPH05153260(A)
申请公布日期
1993.06.18
申请号
JP19910316405
申请日期
1991.11.29
申请人
TOSHIBA CORP
发明人
DOI MIWAKO
分类号
H04M3/56;H04L9/00;H04L9/10;H04L9/12
主分类号
H04M3/56
代理机构
代理人
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