Device for pointing pencil leads,申请号US19580714321-传众专利搜索

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发明名称	Device for pointing pencil leads
摘要
申请公布号	US2895453(A)	申请公布日期	1959.07.21
申请号	US19580714321	申请日期	1958.02.10
申请人	JONES JR IRA DAVID	发明人	JR. IRA DAVID JONES,
分类号	B43L23/00	主分类号	B43L23/00
代理机构		代理人
主权项
地址

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