3178857

Information

• Patent Grant
• 3178857

• References
• Source

• Patent Number

  3,178,857

• Date Filed

  Not available

• Date Issued

  Tuesday, April 20, 1965
  59 years ago

• CPC

  • B24B53/047 - equipped with one or more diamonds
  • B24B3/26 - of the point of twist drills

• US Classifications

  • 451 - Abrading