3490261

Information

• Patent Grant
• 3490261

• References
• Source

• Patent Number

  3,490,261

• Date Filed

  Not available

• Date Issued

  Tuesday, January 20, 1970
  55 years ago

• CPC

  • B21H7/007 - Taper rolling
  • Y10T29/49609 - Spring making

• US Classifications

  • 072 - Metal deforming
  • 029 - Metal working