Back-stand grinder,申请号US19490127065-传众专利搜索

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发明名称	Back-stand grinder
摘要
申请公布号	US2637952(A)	申请公布日期	1953.05.12
申请号	US19490127065	申请日期	1949.11.14
申请人	MINNESOTA MINING & MANUFACTURING COMPANY	发明人	REED RALPH W.
分类号	B24B21/00	主分类号	B24B21/00
代理机构		代理人
主权项
地址

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