Automatic grinder for tungsten carbide drill bits,申请号US19550549269-传众专利搜索

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发明名称	Automatic grinder for tungsten carbide drill bits
摘要
申请公布号	US2847800(A)	申请公布日期	1958.08.19
申请号	US19550549269	申请日期	1955.11.28
申请人	INGERSOLL HOWARD E	发明人	INGERSOLL HOWARD E.
分类号	B24B3/33	主分类号	B24B3/33
代理机构		代理人
主权项
地址

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