3576120

Information

• Patent Grant
• 3576120

• References
• Source

• Patent Number

  3,576,120

• Date Filed

  Not available

• Date Issued

  Tuesday, April 27, 1971
  53 years ago

• CPC

  • B21F3/06 - internally on a hollow form
  • B21F11/005 - springs

• US Classifications

  • 072 - Metal deforming
  • 140 - Wireworking