Method and apparatus for forming heat exchanger tubes,申请号US19890439824-传众专利搜索

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法人/股东/高管

发明名称	Method and apparatus for forming heat exchanger tubes
摘要
申请公布号	US4971240(A)	申请公布日期	1990.11.20
申请号	US19890439824	申请日期	1989.11.21
申请人	WALLIS, BERNARD J.	发明人	WALLIS, BERNARD J.
分类号	B21C37/08;B21C37/15	主分类号	B21C37/08
代理机构		代理人
主权项
地址

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