3025917

Information

• Patent Grant
• 3025917

• References
• Source

• Patent Number

  3,025,917

• Date Filed

  Not available

• Date Issued

  Tuesday, March 20, 1962
  63 years ago

• CPC

  • B23B51/0406 - Drills with a tubular body
  • E21B7/008 - Drilling ice or a formation covered by ice
  • E21B17/22 - Rods or pipes with helical structure
  • B23B2226/48 - Ice
  • B23B2251/408 - Spiral grooves
  • B23B2251/50 - Drilling tools comprising cutting inserts

• US Classifications

  • 175 - Boring or penetrating the earth