2797421

Information

• Patent Grant
• 2797421

• References
• Source

• Patent Number

  2,797,421

• Date Filed

  Not available

• Date Issued

  Tuesday, July 2, 1957
  67 years ago

• CPC

  • B23G5/20 - combined with other tools
  • B23B5/168 - with guiding devices
  • B23B51/108 - having a centering twist drill
  • B23G2200/146 - Tools comprising a tap
  • B23G2200/148 - Tools having means for countersinking
  • Y10T408/625 - Spring biased

• US Classifications

  • 408 - Cutting by use of rotating axially moving tool
  • 470 - Threaded, headed fastener, or washer making: process and apparatus