发明名称 Composite metal tube and ring and a process for producing a composite metal tube and ring
摘要 There is provided multicolored metal rings and multicolored metal tubing and a method for producing metal rings and metal tubing for use in forming multicolored rings. At least two contrastingly colored metal components are arranged in a container. The metal components in said container are compressed so as to form a billet of distorted multicolored metal. The billet is extruded thereby forming multicolored patterns in the tubing.
申请公布号 US7735714(B2) 申请公布日期 2010.06.15
申请号 US20060438045 申请日期 2006.05.18
申请人 MIDGETT STEVEN G 发明人 MIDGETT STEVEN G.
分类号 B21D39/00;A44C27/00;B23K31/00 主分类号 B21D39/00
代理机构 代理人
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