2622847

Information

• Patent Grant
• 2622847

• References
• Source

• Patent Number

  2,622,847

• Date Filed

  Not available

• Date Issued

  Tuesday, December 23, 1952
  72 years ago

• CPC

  • E21B17/04 - between rod or the like and bit or between rod and rod or the like
  • E21B7/02 - Portable drilling rigs, truck-or skid-mounted, with their own drive
  • Y10T74/177 - Rack and pinion adjusting means

• US Classifications

  • 173 - Tool driving or impacting
  • 074 - Machine element or mechanism
  • 175 - Boring or penetrating the earth