3788631

Information

• Patent Grant
• 3788631

• References
• Source

• Patent Number

  3,788,631

• Date Filed

  Not available

• Date Issued

  Tuesday, January 29, 1974
  51 years ago

• CPC

  • F16F1/10 - Spiral springs with turns lying substantially in plane surfaces
  • B21D11/06 - Bending into helical or spiral form Forming a succession of return bends
  • B21F3/08 - to flat spiral
  • Y10T29/49609 - Spring making

• US Classifications

  • 267 - Spring devices
  • 029 - Metal working