3586106

Information

• Patent Grant
• 3586106

• References
• Source

• Patent Number

  3,586,106

• Date Filed

  Not available

• Date Issued

  Tuesday, June 22, 1971
  53 years ago

• CPC

  • E21B33/1294 - characterised by a valve
  • E21B33/12955 - using drag blocks frictionally engaging the inner wall of the well

• US Classifications

  • 166 - Wells