Pencil having a sharpening device for the lead,申请号US19290350653-传众专利搜索

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发明名称	Pencil having a sharpening device for the lead
摘要
申请公布号	US1780581(A)	申请公布日期	1930.11.04
申请号	US19290350653	申请日期	1929.03.28
申请人	ALFRED DILLIER	发明人	DILLIER ALFRED
分类号	B43K29/06	主分类号	B43K29/06
代理机构		代理人
主权项
地址

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