3739615

Information

• Patent Grant
• 3739615

• References
• Source

• Patent Number

  3,739,615

• Date Filed

  Not available

• Date Issued

  Tuesday, June 19, 1973
  51 years ago

• CPC

  • B21D9/15 - using filling material of indefinite shape
  • B21C37/15 - Making tubes of special shape Making tube fittings
  • B21D11/06 - Bending into helical or spiral form Forming a succession of return bends
  • B21F3/04 - externally on a mandrel or the like
  • Y10S72/701 - Preventing distortion

• US Classifications

  • 072 - Metal deforming