3871622

Information

• Patent Grant
• 3871622

• References
• Source

• Patent Number

  3,871,622

• Date Filed

  Not available

• Date Issued

  Tuesday, March 18, 1975
  49 years ago

• CPC

  • E21B19/09 - specially adapted for drilling underwater formations from a floating support using heave compensators supporting the drill string
  • Y10S60/907 - Working member positioned against counterforce by constantly applied motive fluid

• US Classifications

  • 254 - Implements or apparatus for applying pushing or pulling force
  • 060 - Power plants
  • 175 - Boring or penetrating the earth