2566913

Information

• Patent Grant
• 2566913

• References
• Source

• Patent Number

  2,566,913

• Date Filed

  Not available

• Date Issued

  Tuesday, September 4, 1951
  73 years ago

• CPC

  • E21B10/36 - Percussion drill bits
  • E21B4/06 - Down-hole impacting means
  • E21B4/08 - impact being obtained by gravity only
  • E21B6/00 - Drives for combined percussion and rotary drilling
  • E21B10/00 - Drill bits

• US Classifications

  • 175 - Boring or penetrating the earth