2754864

Information

• Patent Grant
• 2754864

• References
• Source

• Patent Number

  2,754,864

• Date Filed

  Not available

• Date Issued

  Tuesday, July 17, 1956
  68 years ago

• CPC

  • B23B51/0426 - with centering devices
  • Y10S408/705 - Drilling deep holes
  • Y10T408/5605 - Recession at tool-axis
  • Y10T408/625 - Spring biased
  • Y10T408/895 - Having axial, core-receiving central portion
  • Y10T408/8957 - and having stepped cutting edges

• US Classifications

  • 408 - Cutting by use of rotating axially moving tool