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发明名称
ELECTRONIC BLACKBOARD
摘要
申请公布号
JPS63283998(A)
申请公布日期
1988.11.21
申请号
JP19870088679
申请日期
1987.04.13
申请人
NIPPON TYPEWRITER KK
发明人
KUWABARA EIJI;SAKANO KOJI;ONO YOICHI;HINO SHOGO
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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