2247215

Information

• Patent Grant
• 2247215

• References
• Source

• Patent Number

  2,247,215

• Date Filed

  Not available

• Date Issued

  Tuesday, June 24, 1941
  83 years ago

• CPC

  • E02B3/026 - Removing solid rocks

• US Classifications

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