3860292

Information

• Patent Grant
• 3860292

• References
• Source

• Patent Number

  3,860,292

• Date Filed

  Not available

• Date Issued

  Tuesday, January 14, 1975
  50 years ago

• CPC

  • E21D9/104 - Cutting tool fixtures
  • E21C25/18 - Saws Discs Wheels
  • E21D9/1013 - on a tool-carrier supported by a movable boom
  • E21D9/1046 - Vibrating

• US Classifications

  • 299 - Mining or in situ disintegration of hard material
  • 173 - Tool driving or impacting
  • 175 - Boring or penetrating the earth