ELECTRONIC BLACKBOARD APPARATUS,申请号JP19900017887-传众专利搜索

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发明名称	ELECTRONIC BLACKBOARD APPARATUS
摘要
申请公布号	JPH03222798(A)	申请公布日期	1991.10.01
申请号	JP19900017887	申请日期	1990.01.30
申请人	OKI ELECTRIC IND CO LTD	发明人	TADOKORO JOSHI
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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