2556357

Information

• Patent Grant
• 2556357

• References
• Source

• Patent Number

  2,556,357

• Date Filed

  Not available

• Date Issued

  Tuesday, June 12, 1951
  73 years ago

• CPC

  • E21B15/006 - Means for anchoring the drilling machine to the ground
  • E21D15/24 - with axial screw-and-nut, rack-and-worm, or like mechanism

• US Classifications

  • 173 - Tool driving or impacting
  • 248 - Supports
  • 254 - Implements or apparatus for applying pushing or pulling force