3422505

Information

• Patent Grant
• 3422505

• References
• Source

• Patent Number

  3,422,505

• Date Filed

  Not available

• Date Issued

  Tuesday, January 21, 1969
  56 years ago

• CPC

  • E21B15/02 - specially adapted for underwater drilling
  • E02B17/0845 - with inflatable clamping rings
  • E04G11/24 - Construction of lifting jacks or climbing rods for sliding forms
  • E04G21/16 - Tools or apparatus

• US Classifications

  • 294 - Handling: hand and hoist-line implements
  • 188 - Brakes
  • 405 - Hydraulic and earth engineering