Method of grain refining centrifugal castings,申请号US19570680298-传众专利搜索

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发明名称	Method of grain refining centrifugal castings
摘要
申请公布号	US2931744(A)	申请公布日期	1960.04.05
申请号	US19570680298	申请日期	1957.08.26
申请人	UNITED STATES PIPE AND FOUNDRY COMPANY	发明人	SAMUELS MARTIN L.
分类号	B21C37/30;C21D8/10	主分类号	B21C37/30
代理机构		代理人
主权项
地址

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