Method of hardening and tempering metal,申请号US19320603901-传众专利搜索

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发明名称	Method of hardening and tempering metal
摘要
申请公布号	US1881320(A)	申请公布日期	1932.10.04
申请号	US19320603901	申请日期	1932.04.07
申请人	WILLIAM L. CRUMRINE	发明人	LANDON JESSE
分类号	C21D1/58	主分类号	C21D1/58
代理机构		代理人
主权项
地址

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