Finned tube and method for forming the same,申请号US19350043941-传众专利搜索

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发明名称	Finned tube and method for forming the same
摘要
申请公布号	US2161898(A)	申请公布日期	1939.06.13
申请号	US19350043941	申请日期	1935.10.07
申请人	LEDBETTER ELMER E	发明人	LEDBETTER ELMER E.
分类号	B21C37/26	主分类号	B21C37/26
代理机构		代理人
主权项
地址

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