Valve-seat grinding means,申请号US19470740282-传众专利搜索

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发明名称	Valve-seat grinding means
摘要
申请公布号	US2525119(A)	申请公布日期	1950.10.10
申请号	US19470740282	申请日期	1947.04.09
申请人	S & D ENGINEERING COMPANY	发明人	DUNN ALLEN I.
分类号	B24B15/00	主分类号	B24B15/00
代理机构		代理人
主权项
地址

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