3412643

Information

• Patent Grant
• 3412643

• References
• Source

• Patent Number

  3,412,643

• Date Filed

  Not available

• Date Issued

  Tuesday, November 26, 1968
  56 years ago

• CPC

  • B23C3/16 - Working surfaces curved in two directions
  • Y10T409/30112 - Process
  • Y10T409/303136 - to make a double curvature foil

• US Classifications

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