2893696

Information

• Patent Grant
• 2893696

• References
• Source

• Patent Number

  2,893,696

• Date Filed

  Not available

• Date Issued

  Tuesday, July 7, 1959
  65 years ago

• CPC

  • E21B10/06 - Roller core bits
  • E21B10/34 - of roller-cutter type

• US Classifications

  • 175 - Boring or penetrating the earth