Open hearth furnace construction,申请号US19540415247-传众专利搜索

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发明名称	Open hearth furnace construction
摘要
申请公布号	US2797910(A)	申请公布日期	1957.07.02
申请号	US19540415247	申请日期	1954.03.10
申请人	NATIONAL STEEL CORPORATION	发明人	USMIANI ANDREW
分类号	F28D17/00	主分类号	F28D17/00
代理机构		代理人
主权项
地址

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