3456392

Information

• Patent Grant
• 3456392

• References
• Source

• Patent Number

  3,456,392

• Date Filed

  Not available

• Date Issued

  Tuesday, July 22, 1969
  55 years ago

• CPC

  • B24B3/28 - by swivelling the drill around an axis angularly to the drill axis
  • B24B53/047 - equipped with one or more diamonds

• US Classifications

  • 451 - Abrading