1490391

Information

• Patent Grant
• 1490391

• References
• Source

• Patent Number

  1,490,391

• Date Filed

  Not available

• Date Issued

  Tuesday, April 15, 1924
  101 years ago

• CPC

  • B24B37/08 - for double side lapping
  • Y10S451/905 - Metal lap

• US Classifications

  • 451 - Abrading