3451477

Information

• Patent Grant
• 3451477

• References
• Source

• Patent Number

  3,451,477

• Date Filed

  Not available

• Date Issued

  Tuesday, June 24, 1969
  55 years ago

• CPC

  • E21B43/38 - in the well
  • Y10T137/3065 - Servo-control

• US Classifications

  • 166 - Wells
  • 137 - Fluid handling
  • 417 - Pumps