2344065

Information

• Patent Grant
• 2344065

• References
• Source

• Patent Number

  2,344,065

• Date Filed

  Not available

• Date Issued

  Tuesday, March 14, 1944
  81 years ago

• CPC

  • E21B19/081 - Screw-and-nut feed mechanisms
  • E21B11/06 - with driven cutting chains or similarly driven tools
  • E21B15/006 - Means for anchoring the drilling machine to the ground
  • E21C25/22 - Machines slitting solely by one or more cutter chains moving unidirectionally along jibs

• US Classifications

  • 175 - Boring or penetrating the earth
  • 173 - Tool driving or impacting
  • 299 - Mining or in situ disintegration of hard material