3387459

Information

• Patent Grant
• 3387459

• References
• Source

• Patent Number

  3,387,459

• Date Filed

  Not available

• Date Issued

  Tuesday, June 11, 1968
  57 years ago

• CPC

  • E21B15/02 - specially adapted for underwater drilling
  • E21B43/01 - specially adapted for obtaining from underwater installations
  • Y10T24/44607 - Track or way oblique to path of gripping member

• US Classifications

  • 405 - Hydraulic and earth engineering
  • 024 - Buckles, buttons, clasps, etc.
  • 166 - Wells
  • 175 - Boring or penetrating the earth