3710876

Information

• Patent Grant
• 3710876

• References
• Source

• Patent Number

  3,710,876

• Date Filed

  Not available

• Date Issued

  Tuesday, January 16, 1973
  51 years ago

• CPC

  • E21B11/02 - Boring rams

• US Classifications

  • 173 - Tool driving or impacting
  • 175 - Boring or penetrating the earth