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发明名称
ELECTRONIC BLACKBOARD
摘要
申请公布号
JPH09224111(A)
申请公布日期
1997.08.26
申请号
JP19960028828
申请日期
1996.02.16
申请人
HITACHI DENSHI LTD
发明人
ISHIKAWA MASAHITO;TOMINAGA KAN
分类号
G06F3/041;G06F3/033;H04N1/00;(IPC1-7):H04N1/00
主分类号
G06F3/041
代理机构
代理人
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