3355214

Information

• Patent Grant
• 3355214

• References
• Source

• Patent Number

  3,355,214

• Date Filed

  Not available

• Date Issued

  Tuesday, November 28, 1967
  57 years ago

• CPC

  • E01C23/092 - rotary

• US Classifications

  • 299 - Mining or in situ disintegration of hard material
  • 172 - Earth working
  • 173 - Tool driving or impacting