3581384

Information

• Patent Grant
• 3581384

• References
• Source

• Patent Number

  3,581,384

• Date Filed

  Not available

• Date Issued

  Tuesday, June 1, 1971
  53 years ago

• CPC

  • B21C1/22 - specially adapted for making tubular articles
  • B21B19/14 - Rolling tubes by means of additional rollers arranged inside the tubes
  • B21B23/00 - Tube-rolling not restricted to methods provided for in only one of groups B21B17/00, B21B19/00, B21B21/00
  • B21C37/06 - of tubes or metal hoses Combined procedures for making tubes
  • Y10T29/49991 - Combined with rolling

• US Classifications

  • 029 - Metal working
  • 164 - Metal founding