ELECTRONIC BLACKBOARD DEVICE,申请号JP19910195408-传众专利搜索

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发明名称	ELECTRONIC BLACKBOARD DEVICE
摘要
申请公布号	JPH0538896(A)	申请公布日期	1993.02.19
申请号	JP19910195408	申请日期	1991.08.05
申请人	CANON INC	发明人	ITO HIROYASU
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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