2704655

Information

• Patent Grant
• 2704655

• References
• Source

• Patent Number

  2,704,655

• Date Filed

  Not available

• Date Issued

  Tuesday, March 22, 1955
  69 years ago

• CPC

  • E21B10/06 - Roller core bits
  • Y10T137/7734 - Fluid opened valve requiring reset

• US Classifications

  • 175 - Boring or penetrating the earth
  • 137 - Fluid handling