3499487

Information

• Patent Grant
• 3499487

• References
• Source

• Patent Number

  3,499,487

• Date Filed

  Not available

• Date Issued

  Tuesday, March 10, 1970
  55 years ago

• CPC

  • E21B49/087 - Well testing
  • E21B23/006 - "J-slot" systems
  • E21B34/125 - with time delay systems
  • E21B43/12 - Methods or apparatus for controlling the flow of the obtained fluid to or in wells
  • E21B47/00 - Survey of boreholes or wells
  • E21B2034/002 - Ball valves

• US Classifications

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