A combined eraser and suction cleaner for blackboards,申请号GB19620016874-传众专利搜索

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发明名称	A combined eraser and suction cleaner for blackboards
摘要
申请公布号	GB935807(A)	申请公布日期	1963.09.04
申请号	GB19620016874	申请日期	1962.05.02
申请人	KWAN SHU MIN	发明人	MIN KWAN SHU
分类号	B43L21/02	主分类号	B43L21/02
代理机构		代理人
主权项
地址

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