3247913

Information

• Patent Grant
• 3247913

• References
• Source

• Patent Number

  3,247,913

• Date Filed

  Not available

• Date Issued

  Tuesday, April 26, 1966
  58 years ago

• CPC

  • E21B19/08 - Apparatus for feeding the rods or cables Apparatus for increasing or decreasing the pressure on the drilling tool Apparatus for counterbalancing the weight of the rods
  • E21B19/081 - Screw-and-nut feed mechanisms

• US Classifications

  • 173 - Tool driving or impacting