1658397

Information

• Patent Grant
• 1658397

• References
• Source

• Patent Number

  1,658,397

• Date Filed

  Not available

• Date Issued

  Tuesday, February 7, 1928
  97 years ago

• CPC

  • E21D9/104 - Cutting tool fixtures
  • B27B33/145 - having plural teeth on a single link
  • B27B33/147 - with incorporated lubricating means
  • B28D1/125 - with exchangeable cutter bits or cutter segments

• US Classifications

  • 299 - Mining or in situ disintegration of hard material
  • 125 - Stone working
  • 175 - Boring or penetrating the earth