3823590

Information

• Patent Grant
• 3823590

• References
• Source

• Patent Number

  3,823,590

• Date Filed

  Not available

• Date Issued

  Tuesday, July 16, 1974
  50 years ago

• CPC

  • B21F3/04 - externally on a mandrel or the like
  • B21F35/003 - Multi-filament springs

• US Classifications

  • 072 - Metal deforming