Knife sharpening and grinding attachment,申请号US19510234757-传众专利搜索

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法人/股东/高管

发明名称	Knife sharpening and grinding attachment
摘要
申请公布号	US2640303(A)	申请公布日期	1953.06.02
申请号	US19510234757	申请日期	1951.07.02
申请人	JOHNSON ARNOLD R	发明人	JOHNSON ARNOLD R.
分类号	B24B3/54;B24B21/00	主分类号	B24B3/54
代理机构		代理人
主权项
地址

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