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发明名称
ELECTRONIC BLACKBOARD SYSTEM
摘要
申请公布号
JPS6249770(A)
申请公布日期
1987.03.04
申请号
JP19850191434
申请日期
1985.08.29
申请人
SHARP CORP
发明人
NOGUCHI YOJI;TAKAKURA MASAKI;IWASAKI KEISUKE;IZUMI MASAO;TAKEMURA HIDEO;YAMANE YASUKUNI;GAKO NOBUTOSHI
分类号
H04N1/04;H04N1/00
主分类号
H04N1/04
代理机构
代理人
主权项
地址
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