2020589

Information

• Patent Grant
• 2020589

• References
• Source

• Patent Number

  2,020,589

• Date Filed

  Not available

• Date Issued

  Tuesday, November 12, 1935
  89 years ago

• CPC

  • B24B33/089 - with a rack-and-pinion mechanism for expanding the honing segments

• US Classifications

  • 451 - Abrading