456423

Information

• Patent Grant
• 456423

• References
• Source

• Patent Number

  456,423

• Date Filed

  Not available

• Date Issued

  Tuesday, July 21, 1891
  133 years ago

• CPC

  • B23Q35/103 - which turns continuously
  • A61C5/10 - Methods or devices for making crowns
  • Y10T409/302296 - including plural cutters

• US Classifications

  • 409 - Gear cutting, milling, or planing
  • 144 - Woodworking