3145759

Information

• Patent Grant
• 3145759

• References
• Source

• Patent Number

  3,145,759

• Date Filed

  Not available

• Date Issued

  Tuesday, August 25, 1964
  60 years ago

• CPC

  • B21F3/08 - to flat spiral
  • B21F35/04 - Making flat springs
  • Y10T29/49609 - Spring making
  • Y10T29/49863 - with prestressing of part

• US Classifications

  • 072 - Metal deforming
  • 029 - Metal working