3856057

Information

• Patent Grant
• 3856057

• References
• Source

• Patent Number

  3,856,057

• Date Filed

  Not available

• Date Issued

  Tuesday, December 24, 1974
  50 years ago

• CPC

  • B21D11/06 - Bending into helical or spiral form Forming a succession of return bends
  • B21D11/10 - Bending specially adapted to produce specific articles
  • B21F3/04 - externally on a mandrel or the like
  • Y10S72/70 - Deforming specified alloys or uncommon metal or bimetallic work
  • Y10S72/701 - Preventing distortion

• US Classifications

  • 140 - Wireworking
  • 072 - Metal deforming
  • 219 - Electric heating