2801669

Information

• Patent Grant
• 2801669

• References
• Source

• Patent Number

  2,801,669

• Date Filed

  Not available

• Date Issued

  Tuesday, August 6, 1957
  67 years ago

• CPC

  • B21F3/02 - helically
  • B21D11/06 - Bending into helical or spiral form Forming a succession of return bends
  • B21F3/00 - Coiling wire into particular forms
  • B21F3/08 - to flat spiral
  • B21F35/00 - Making springs from wire
  • F16F1/04 - Wound springs

• US Classifications

  • 072 - Metal deforming
  • 318 - Electricity: motive power systems