3838937

Information

• Patent Grant
• 3838937

• References
• Source

• Patent Number

  3,838,937

• Date Filed

  Not available

• Date Issued

  Tuesday, October 1, 1974
  50 years ago

• CPC

  • B23B51/108 - having a centering twist drill
  • Y10T408/8734 - including central Tool axially movable relative to support
  • Y10T408/906 - Axially spaced
  • Y10T408/907 - including detailed shank

• US Classifications

  • 408 - Cutting by use of rotating axially moving tool