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经营范围
发明名称
ELECTRONIC BLACKBOARD DEVICE
摘要
申请公布号
JPS6163500(A)
申请公布日期
1986.04.01
申请号
JP19840184486
申请日期
1984.09.05
申请人
OKI ELECTRIC IND CO LTD
发明人
NAKAMURA FUMIO;ONISHI KENJI
分类号
B43L1/04
主分类号
B43L1/04
代理机构
代理人
主权项
地址
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