3575520

Information

• Patent Grant
• 3575520

• References
• Source

• Patent Number

  3,575,520

• Date Filed

  Not available

• Date Issued

  Tuesday, April 20, 1971
  54 years ago

• CPC

  • B23B51/108 - having a centering twist drill
  • B23B51/08 - Drills combined with tool parts or tools for performing additional working
  • Y10T408/8725 - including means to permit relative axial positioning of edges
  • Y10T408/9065 - with central lead

• US Classifications

  • 408 - Cutting by use of rotating axially moving tool