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发明名称
ELECTRONIC BLACKBOARD DEVICE
摘要
申请公布号
JPS63281899(A)
申请公布日期
1988.11.18
申请号
JP19870117994
申请日期
1987.05.14
申请人
BROTHER IND LTD
发明人
OKAMOTO TSUGIO;SAWADA AKIHIRO;HATTA NAOYUKI
分类号
B43L1/04;H04N1/00
主分类号
B43L1/04
代理机构
代理人
主权项
地址
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