Free cutting alloy,申请号US19330689890-传众专利搜索

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发明名称	Free cutting alloy
摘要
申请公布号	US1986826(A)	申请公布日期	1935.01.08
申请号	US19330689890	申请日期	1933.09.18
申请人	ALUMINUM COMPANY OF AMERICA	发明人	HOPKINS HOWARD L.
分类号	C22C21/12	主分类号	C22C21/12
代理机构		代理人
主权项
地址

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