2500566

Information

• Patent Grant
• 2500566

• References
• Source

• Patent Number

  2,500,566

• Date Filed

  Not available

• Date Issued

  Tuesday, March 14, 1950
  74 years ago

• CPC

  • B21F37/02 - of resilient rings
  • B23P15/06 - piston rings from one piece
  • C21D9/40 - for rings for bearing races

• US Classifications

  • 148 - Metal treatment
  • 219 - Electric heating