1691898

Information

• Patent Grant
• 1691898

• References
• Source

• Patent Number

  1,691,898

• Date Filed

  Not available

• Date Issued

  Tuesday, November 13, 1928
  96 years ago

• CPC

  • B24B17/023 - using two or more templates
  • Y10T409/30 - Milling

• US Classifications

  • 451 - Abrading
  • 409 - Gear cutting, milling, or planing