AUTOMATIC SHAKE OFF DEVICE FOR CHALK ERASER,申请号KR19800000849U-传众专利搜索

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发明名称	AUTOMATIC SHAKE OFF DEVICE FOR CHALK ERASER
摘要
申请公布号	KR810001233(Y1)	申请公布日期	1981.09.24
申请号	KR19800000849U	申请日期	1980.02.09
申请人	SUNG IN HO	发明人	SUNG IN HO
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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