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经营范围
发明名称
ELECTRONIC BLACKBOARD DEVICE
摘要
申请公布号
JPS6256199(A)
申请公布日期
1987.03.11
申请号
JP19850197344
申请日期
1985.09.06
申请人
MITSUBISHI ELECTRIC CORP
发明人
UMEHARA SEIJI;SAKAI KATSUYOSHI
分类号
H04N1/19;B43L1/04;H04N1/04
主分类号
H04N1/19
代理机构
代理人
主权项
地址
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