3494419

Information

• Patent Grant
• 3494419

• References
• Source

• Patent Number

  3,494,419

• Date Filed

  Not available

• Date Issued

  Tuesday, February 10, 1970
  55 years ago

• CPC

  • E21B23/006 - "J-slot" systems
  • E21B34/125 - with time delay systems
  • E21B2034/002 - Ball valves

• US Classifications

  • 166 - Wells