3714983

Information

• Patent Grant
• 3714983

• References
• Source

• Patent Number

  3,714,983

• Date Filed

  Not available

• Date Issued

  Tuesday, February 6, 1973
  51 years ago

• CPC

  • E21B31/107 - using impact means for releasing stuck parts
  • E21B17/06 - Releasing-joints
  • E21B23/06 - for setting packers
  • E21B33/1294 - characterised by a valve
  • E21B33/12955 - using drag blocks frictionally engaging the inner wall of the well

• US Classifications

  • 166 - Wells
  • 175 - Boring or penetrating the earth