3221690

Information

• Patent Grant
• 3221690

• References
• Source

• Patent Number

  3,221,690

• Date Filed

  Not available

• Date Issued

  Tuesday, December 7, 1965
  59 years ago

• CPC

  • B21D51/28 - Folding the longitudinal seam
  • B30B1/26 - by cams, eccentrics, or cranks
  • F16C5/00 - Crossheads Constructions of connecting-rod heads or piston-rod connections rigid with crossheads

• US Classifications

  • 413 - Sheet metal container making