2745647

Information

• Patent Grant
• 2745647

• References
• Source

• Patent Number

  2,745,647

• Date Filed

  Not available

• Date Issued

  Tuesday, May 15, 1956
  68 years ago

• CPC

  • E21B43/292 - using steerable or laterally extendable nozzles

• US Classifications

  • 299 - Mining or in situ disintegration of hard material
  • 175 - Boring or penetrating the earth
  • 405 - Hydraulic and earth engineering