ELECTRONIC BLACKBOARD DEVICE,申请号JP19860163891-传众专利搜索

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发明名称	ELECTRONIC BLACKBOARD DEVICE
摘要
申请公布号	JPS6319297(A)	申请公布日期	1988.01.27
申请号	JP19860163891	申请日期	1986.07.14
申请人	NEC CORP;NEC ENG LTD	发明人	ONODERA TAKEO;TAKANO KATSUMOTO
分类号	B43L1/04;H04N1/00;H04N1/04	主分类号	B43L1/04
代理机构		代理人
主权项
地址

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ETCHING APPARATUS FOR PRINTED BOARDS