3172431

Information

• Patent Grant
• 3172431

• References
• Source

• Patent Number

  3,172,431

• Date Filed

  Not available

• Date Issued

  Tuesday, March 9, 1965
  59 years ago

• CPC

  • B21F43/00 - Making bands
  • B21F35/04 - Making flat springs

• US Classifications

  • 140 - Wireworking