3400980

Information

• Patent Grant
• 3400980

• References
• Source

• Patent Number

  3,400,980

• Date Filed

  Not available

• Date Issued

  Tuesday, September 10, 1968
  56 years ago

• CPC

  • 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