855644

Information

• Patent Grant
• 855644

• References
• Source

• Patent Number

  855,644

• Date Filed

  Not available

• Date Issued

  Tuesday, June 4, 1907
  117 years ago

• CPC

  • B23F5/06 - the tool being a grinding disc with a plane front surface
  • B24B5/047 - of workpieces turning about a vertical axis

• US Classifications

  • 451 - Abrading