2575239

Information

• Patent Grant
• 2575239

• References
• Source

• Patent Number

  2,575,239

• Date Filed

  Not available

• Date Issued

  Tuesday, November 13, 1951
  73 years ago

• CPC

  • B23B51/0009 - Spade drills
  • B23B51/00 - Tools for drilling machines
  • B23B51/06 - Drills with lubricating or cooling equipment
  • E21B10/003 - with cutting edges facing in opposite axial directions
  • E21B10/62 - characterised by parts
  • B23B2251/50 - Drilling tools comprising cutting inserts
  • B23B2265/326 - Hexagonal
  • Y10T408/907 - including detailed shank
  • Y10T408/90993 - Screw driven means

• US Classifications

  • 175 - Boring or penetrating the earth
  • 408 - Cutting by use of rotating axially moving tool