发明授权
- 专利标题: Apparatus for making helical electric resistance heating wire coils and provided with a rotary mandrel and a pressing roll having an elastically deformable coil embracing surface
- 专利标题(中): 用于制造螺旋电阻加热线圈并设置有旋转心轴和具有可弹性变形的线圈包围表面的压辊的装置
-
申请号: US43179154申请日: 1954-05-24
-
公开(公告)号: US2909209A公开(公告)日: 1959-10-20
- 发明人: PATSY CICCONE , WALTER WALLIN WILLIAM
- 申请人: DRIVER HARRIS CO
- 专利权人: Driver Harris Co
- 当前专利权人: Driver Harris Co
- 优先权: US43179154 1954-05-24
- 主分类号: B21F3/04
- IPC分类号: B21F3/04 ; H01K3/04
信息查询