BLACK BOARD ERASER,申请号KR19800007335U-传众专利搜索

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发明名称	BLACK BOARD ERASER
摘要
申请公布号	KR810002509(Y1)	申请公布日期	1981.12.28
申请号	KR19800007335U	申请日期	1980.11.14
申请人	CHOI S	发明人	CHOI S
分类号	B43L21/00;(IPC1-7):B43L21/00	主分类号	B43L21/00
代理机构		代理人
主权项
地址

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