Steel heat treatment,申请号US19420467987-传众专利搜索

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发明名称	Steel heat treatment
摘要
申请公布号	US2335506(A)	申请公布日期	1943.11.30
申请号	US19420467987	申请日期	1942.12.05
申请人	UNITED STATES STEEL CORPORATION OF DELAWARE	发明人	GRANGE RAYMOND A.
分类号	C21D8/00	主分类号	C21D8/00
代理机构		代理人
主权项
地址

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