3873156

Information

• Patent Grant
• 3873156

• References
• Source

• Patent Number

  3,873,156

• Date Filed

  Not available

• Date Issued

  Tuesday, March 25, 1975
  49 years ago

• CPC

  • E21B41/0078 - Nozzles used in boreholes
  • E21B7/04 - Directional drilling
  • E21B43/17 - Interconnecting two or more wells by fracturing or otherwise attacking the formation
  • E21B43/292 - using steerable or laterally extendable nozzles

• US Classifications

  • 299 - Mining or in situ disintegration of hard material
  • 166 - Wells
  • 175 - Boring or penetrating the earth