Knife grinding machine,申请号US19380214478-传众专利搜索

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发明名称	Knife grinding machine
摘要
申请公布号	US2183995(A)	申请公布日期	1939.12.19
申请号	US19380214478	申请日期	1938.06.18
申请人	WILLIAM WALTER HARTMAN	发明人	MAUTZ FERDINAND L.
分类号	B24B3/58	主分类号	B24B3/58
代理机构		代理人
主权项
地址

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