Process for improving the machining qualities of steel,申请号US19530347170-传众专利搜索

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发明名称	Process for improving the machining qualities of steel
摘要
申请公布号	US2829996(A)	申请公布日期	1958.04.08
申请号	US19530347170	申请日期	1953.04.06
申请人	BETHLEHEM STEEL COMPANY	发明人	MURPHY DONALD W.
分类号	C21D1/78	主分类号	C21D1/78
代理机构		代理人
主权项
地址

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