1490819

Information

• Patent Grant
• 1490819

• References
• Source

• Patent Number

  1,490,819

• Date Filed

  Not available

• Date Issued

  Tuesday, April 15, 1924
  100 years ago

• CPC

  • B24B15/08 - for grinding co-operating seat surfaces by moving one over the other
  • Y10T74/19195 - Progressive

• US Classifications

  • 451 - Abrading
  • 074 - Machine element or mechanism