Knife sharpening mechanism,申请号US19570665894-传众专利搜索

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发明名称	Knife sharpening mechanism
摘要
申请公布号	US2829474(A)	申请公布日期	1958.04.08
申请号	US19570665894	申请日期	1957.06.17
申请人	EASTMAN MACHINE COMPANY	发明人	CLARK FREDERICK G.
分类号	B24B3/36	主分类号	B24B3/36
代理机构		代理人
主权项
地址

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