Improvements in chalk-holders for blackboards and the like,申请号GB19340029577-传众专利搜索

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发明名称	Improvements in chalk-holders for blackboards and the like
摘要
申请公布号	GB426771(A)	申请公布日期	1935.04.09
申请号	GB19340029577	申请日期	1934.10.16
申请人	UUNO MIETTINEN	发明人
分类号	A63D15/16	主分类号	A63D15/16
代理机构		代理人
主权项
地址

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