1328469

Information

• Patent Grant
• 1328469

• References
• Source

• Patent Number

  1,328,469

• Date Filed

  Not available

• Date Issued

  Tuesday, January 20, 1920
  105 years ago

• CPC

  • B23G1/38 - with grinding discs guided along the workpiece in accordance with the pitch of the required thread

• US Classifications

  • 451 - Abrading