Return bend heat exchanger and process for manufacture,申请号US19530360914-传众专利搜索

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发明名称	Return bend heat exchanger and process for manufacture
摘要
申请公布号	US2746727(A)	申请公布日期	1956.05.22
申请号	US19530360914	申请日期	1953.06.11
申请人	EARL JR RALPH W	发明人	JR. RALPH W. EARL,
分类号	B21D53/06;F28D1/047	主分类号	B21D53/06
代理机构		代理人
主权项
地址

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