490638

Information

• Patent Grant
• 490638

• References
• Source

• Patent Number

  490,638

• Date Filed

  Not available

• Date Issued

  Tuesday, January 31, 1893
  131 years ago

• CPC

  • B23F21/04 - Planing or slotting tools
  • Y10T407/17 - Gear cutting tool
  • Y10T407/23 - including tool having plural alternatively usable cutting edges

• US Classifications

  • 407 - Cutters, for shaping