2598518

Information

• Patent Grant
• 2598518

• References
• Source

• Patent Number

  2,598,518

• Date Filed

  Not available

• Date Issued

  Tuesday, May 27, 1952
  73 years ago

• CPC

  • E21B10/16 - characterised by tooth form or arrangement
  • E21B10/083 - with longitudinal axis
  • E21B10/22 - characterised by bearing, lubrication or sealing details

• US Classifications

  • 175 - Boring or penetrating the earth