2830921

Information

• Patent Grant
• 2830921

• References
• Source

• Patent Number

  2,830,921

• Date Filed

  Not available

• Date Issued

  Tuesday, April 15, 1958
  66 years ago

• CPC

  • B21B19/04 - Rolling basic material of solid, i.e. non-hollow, structure Piercing
  • B21B3/00 - Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences Rolling of aluminium, copper, zinc or other non-ferrous metals
  • B21B2045/0227 - for tubes

• US Classifications

  • 148 - Metal treatment
  • 072 - Metal deforming